mifold – your portable car seat. Just Grab-and-Go!

mifold is the most advanced and compact, portable car seat ever invented.
For those journeys when a child’s regular car seat is simply not available, mifold’s advanced, compact design offers a highly portable car seat for every child, in every car, on every journey, every time!
Advanced Engineering

Built using super tough plastic polymers like Delrin 100 ST from Dupont, aircraft grade 6061-T6 aluminum and supportive DenseFoam with non-slip FrictionFabric. Top designers, engineers and industry experts have created the mifold, the most advanced car seat ever invented, to not only be mighty strong, but to also offer ultimate comfort.


Measuring only 23 x 12 x 2cm (LxWxH) when folded and weighing less than a small bottle of water (0.70kg), mifold can adjust to securely restrain children of all sizes – the lap belt guides have 3 positions and the Quick-Clip allows fast, easy and accurate adjustment for children of all heights.


Mighty small and mighty strong, mifold’s unique innovation is that it is highly portable.  It can be carried in a child’s backpack, a mum’s handbag, hand luggage and even kept in vehicle’s glove compartment whilst taking up minimal space!

mifold acts as a safety harness

mifold adjusts the adult seat belt to fit the height and width of the child by pulling the lap belt and chest strap down to accurately sit on the hip bones and the collar bone (away from the face, neck and abdomen) offering the correct amount of restraint in case of impact.

The mifold car seat is designed to conform to the most universally accepted global booster car seat regulations worldwide.  In the UK, mifold is a regulated and certified Group 2/3  ‘Universal’ ECE R44.04 Child Restraint and has been regularly and rigorously crash tested in facilities around the world, complying successfully with the performance requirements of all the regulations.

In other words, mifold can save lives!

Orange label definitions made simple

The orange ECE R44.04 approval label guarantees that the car seat complies with the basic safety requirements as set out in the European safety standard ECE R44.04

Group 2/3 car seat

for 4-12 year olds weighing between 15-36kg and up to 150cm in height, whichever comes first


means your seat is approved for installation in all cars


Your seat meets the European Safety Standard. Under Regulations ECE R44/04, seats undergo frontal collision testing at a speed of 50km/h and rear impact collision testing at 30km/h

UK Law

Is your mifold genuine?

WARNING: Fake mifold have been reported

These counterfeits may pose immense threats to the safety of your children as they may not have gone through the rigorous crash tests and may not comply with the EU nor international safety requirements.

To guarantee that your mifold is genuine, it is absolutely necessary to:

  1. Purchase it through the network of mifold authorized retailers.
  2. Make sure the box is sealed.
  3. Register your car seat. Each mifold has a unique registration number and this has to be entered into a registration system
  4. Check if your car seat has the orange ECE R44.04 approval label. This guarantees that the car seat complies with the safety requirements as set out in the European safety standard ECE R44.04 (see above)

How to use mifold

Please read and follow all the instructions and information in the instruction manual and on the product labels. The following is just a summary on how to use a mifold. To view mifold instructional video installation guide visit: https://askformifold.com

Preparing mifold for use

Securing the child in the mifold

Getting the child out of mifold

Who can use mifold

Best place to use mifold

Removing the mifold seat

mifold Q&A

Frequently Asked Questions


How does it work?

A regular booster seat lifts the child to be in the position of an adult. mifold does the exact opposite, instead of lifting the child up it holds the seatbelt down. It does this at three points: there are belt guides on either side of the child’s hips to hold the lap belt correctly against the bones and off the soft stomach. These belt guides are adjustable to three sizes to make sure that the belt is always held snugly in place. There is a third clip on a strap that pulls the seatbelt chest strap down correctly onto the bones of the shoulder; away from the face and neck. So like a regular booster, mifold holds the seat belt in exactly the correct position on the bones of the hips and the bones of the shoulder, without needing a big, bulky seat to lift the child. In a collision, the child is protected in the same way. mifold simply works to hold the adult seatbelt correctly on a child.

Why should we use mifold?

mifold is a revolutionary new car safety solution. There are many journeys where children do not have a booster (in fact we estimate in as many as 25% of all child journeys – and research has shown that 50% of kids in the USA don’t have the right booster when carpooling for the school run) we want to eliminate these risks completely. With a compact and portable device, there are no excuses, a child can always be safe no matter whose car they are in.

How does the shoulder strap work?

The adult seat belt chest strap must lie on the child’s clavicle (collar bone); not on the face or neck and not over the edge of the shoulder. The mifold shoulder belt positioning strap and clip is attached to the back of the mifold seat and goes behind the child’s back. The clip is then attached onto the adult seat belt chest strap and holds it down on the clavicle. The length of the belt positioning strap and clip is adjusted to the right position.

Is mifold comfortable?

One of our priorities has been to design mifold to be comfortable as well as safe and easy to use. There are more than 100,000 mifold seats in use and in research. We have had positive feedback about comfort and our users tell us that they really do love it.
The comfort comes from three design and engineering factors:
(i) We use a unique EVA DenseFoam™(Ethylene-vinyl acetate) to provide constant support at the pressure points. EVA is typically used as a shock absorber in sports shoes and boxing gloves.
(ii) The foam fabric pad extends to the edge of the seat to ensure there is no hard edge. And
(iii) the child’s weight is designed to sink the entire mifold seat into the vehicle cushion, leveling out the two surfaces and minimizing the edge effect. This is exactly the same as with a regular booster seat. They only have a thin layer of foam/fabric on a plastic/styrofoam base and most of the comfort comes from the underlying car seat (the same thing happens with a hard-backed book … try it!).

In what colors is mifold available?

mifold comes in 6 exciting colors: Perfect Pink, Denim Blue, Lime Green, Slate Grey, Pearl Grey and Yellow Taxi.

How is mifold the first innovation in booster seats for more than 50-years?

In 1963, Dean C. Hunter filed a US patent for the “Safety Seat” … a box that lifted up a child and held a lap belt in place across the bones of the child’s hips. Today, half a century later, boosters are essentially the same … blocks that lift a child up to meet the adult safety belt. mifold changes this. Instead of lifting the child up, mifold does the opposite and holds the seatbelt down to fit the child. Our patent “Apparatus for adapting a seatbelt for a child” is already granted in one country and pending in 45 others

Can mifold be cleaned in the dishwasher?

At this stage, the mifold Grab-and-Go booster seat cannot be cleaned in a dishwasher. We have designed mifold to be easy to clean by washing the surfaces with a mild solution of soap and water. Do not use bleach. Remove the soap by wiping with clean water and after washing then air dry. Although we had hoped that the mifold Grab-and-Go booster seat could also be cleaned in a dishwasher, at this stage we have not tested how a dishwasher may affect components and specifically, how a dishwasher may affect performance and the flame retardant properties of the materials. If there is an update on this issue we will publish revised guidelines via our website and social media channels.


What are the age and weight requirements for mifold?

mifold is designed for children aged 4+ years. However, car seat regulations can be quite confusing and are different in each country; they can be based upon age, weight, height or a combination of all three. In the EU, mifold is designed for children weighing from 15Kg to 36Kg  or up to 150 cm whichever comes first.

How durable is mifold?

mifold is constructed using aircraft grade aluminium 6061 and a super tough plastic polymer called Delrin® 100ST from Dupont™. It has been successfully crash tested and each component rigorously tested to ensure its longevity even under the most extreme use as a child car seat.

Where is mifold manufactured?

mifold is manufactured in China. Our manufacturing partners are world renowned manufacturers that are ISO approved and operate at the highest level of manufacturing and quality control standards. They already manufacture child restraint products for several other well known companies.

Does mifold work with a latch system or the European Isofix?

mifold is designed to work without a latch system. Regular booster seats lift the child to be in the position of an adult, mifold does the exact opposite. Instead of lifting the child up it actively holds the seatbelt down, positioning it correctly on the hips and on the shoulder of the child. A latch system does not help with this mode of operation. Also, there is no installation required with mifold, it is designed for ‘quick-in-quick-out’ usage for every journey in every type of vehicle.

Can mifold be used by small adults?

mifold is not designed for adult use and should not be used by adults. Many people do ask this and, in fact, Jon’s wife is only 150cm (~5 foot) tall and she often complains about the seatbelt bothering her. Our main market is the child restraint market and that is what we are focussing on in terms of regulatory approval. When we are well established in the child market we will evaluate the feasibility of designing a mifold for adults.


What safety regulatory certificates does mifold have?

The mifold booster car seat conforms to the European Union ECE R44.4 car seat regulations.

What type of seat is mifold?

mifold is a Group 2/3 “Universal” child restraint system which means that it can be used in most vehicles. It has been approved in accordance with European regulation ECE R44.04. To meet ECE R44.04 approval, car seats are tested in frontal collisions at 50km/h using crash test P-dummies & advanced measuring instruments designed to assess the levels of protection each seat offers. ECE R44.04 approved seats can all be identified by their orange approval label.

How do mifold booster seats differ when sold in different countries?

The mifold booster car seat conforms to the most universally accepted global booster car seat regulations such as ECE R44.4 for the EU, and FMVSS 213 for the USA. These standards are different, and as a result, there are some minor design changes between the versions. Specifically, the product dimensions differ slightly from country to country.Secondly, the labelling and language requirements vary between territories. This means that the labels and instruction manuals are different based upon the market. Finally, in all territories, whilst the mifold booster seat is designed to be used by children from the age of four years old. However, there are also height and weight recommendations that vary according to the country.

Can we see your crash test results?

As with other manufacturers of child restraint systems, we do not publish our crash test videos.

Does mifold provide side impact protection?

mifold is a backless booster seat that is fully compliant with EU R44.04 (for backless booster seats) which covers the UK and Europe; these standards do not include side impact protection. There are other products available that offer different features, some that exceed the standards (we have used them with our own children over the years). mifold is creating a whole new solution. There are many journeys where children do not have a booster (we estimate as much as 25% of all child journeys – and research has shown that 50% of kids in carpools for school runs don’t have the right booster). We want to eliminate these risks completely. With a compact and portable device, a child can always be safe no matter whose car they are in. The massive improvement in child car safety over the last two decades has come from the adoption of car seats. Statistically, there can only be a minor reduction in the current rates of injury or death by improving the protection in existing car seats. However, continuing the increase in the use of approved seats, where one is currently not available, can still offer a major improvement and we are excited by the prospect of mifold contributing to this car safety objective.

You claim that mifold is “more than 10x smaller and just as safe as a regular booster seat.” What is this claim based upon?

The “more than 10x smaller” size claim is based on the external dimensions of the mifold Grab-and-Go booster seat, and the volume it occupies. Compared to regular booster seats commonly available in the markets, mifold is less than one-tenth of the size, or as we say, “more than 10x smaller.”
The “just as safe” claim is based on the mifold Grab-and-Go booster seat’s compliance with booster seat safety regulations for child restraint systems.


Why do you not ship to Australia?

We are not currently marketing mifold products for use in Australia due to Australian regulatory issues.

Where is mifold available?

mifold is available to buy in UK through a number of local distributors.


What vehicles can mifold be used in?

mifold can ONLY be installed in vehicles with a three-point static or retractable seatbelt that have been approved compliant with UN/ECE No.16 or other equivalent standards.

Is mifold affected by the new 2017 law about booster seats?

As of March 1st 2017 new models of booster seats will be manufactured to only be suitable for children above 125 cm tall and weighing more than 22Kg. This will not affect car restrain systems that have already been regulated. mifold complies with all relevant regulatory requirements and is completely unaffected by the changes. For more information please read Car Booster Seat Regulations Made Simple.

Does mifold have an expiry date?

mifold carries an expiry date of 7-years from the date of manufacture as marked on the product.  Every car seat is different, so always read the user guide to find out the seat’s expiration date and other important information. Most car seats last between five and nine years after they were manufactured (not necessarily after they were bought); that’s why it is important to check the user guide.

Does mifold have a warranty?

Yes, mifold has a manufacturer’s warranty of 1 year.

Can I use my UK mifold on a visit to a different country?

Your mifold seat has an orange R44/04 label on the base, so yes, this version of the mifold is regulated for use in every country in the world except Australia, Canada and the USA.

Some countries have different child restraint regulations that require minor design, packaging, labelling and instruction manual differences. These differences mean that we cannot advise you to use a mifold seat in a country where it is not regulated as local law enforcement may not recognize your version of the mifold seat.

If you do use your mifold seat abroad, it is suggested that you have your travel documents with you; such as passports, airline tickets, etc. to present to local authorities, to confirm that you are tourists.

mifold is ideal for travelling and when used per the manufacturer’s instructions, your mifold seat will always perform as intended wherever you use it.

Can I use mifold with a switchable retractor?

A ‘Switchable Retractor,’ or a retractor that switches from an emergency locking retractor mode (ELR) that locks up in the event of a crash to an automatic locking retractor mode (ALR) that will lock the seat belt into the retractor as the webbing is retracted. This locking feature in the ALR mode is often referred to as a “child restraint locking feature”, is recommended for installing rear-facing or forward-facing car seats with internal harnesses. In most vehicle seating positions, the locked mode occurs when the seat belt is fully extended from the retractor. This child restraint locking feature or ALR/locked mode is not intended for use when restraining an occupant with the vehicle lap and shoulder belt, including when the lap and shoulder belt is combined with a booster seat. Several vehicle manufacturer owner manuals, including Ford, Toyota, Volkswagen and Audi, specifically advise or warn against using this feature with children sitting in a booster car seat. Child passenger safety researchers also advise against this, indicating that locking the seat belt on a child in a booster seat may not allow enough forward motion of the torso to prevent submarining under the lap belt in the in a crash or deceleration event. Researchers also recommend that children who are not behaviorally or developmentally ready to sit still in a booster would be better protected in a high-weight harness child restraint. mifold agrees with the use guidelines and recommendation provided by the vehicle manufacturers and child passenger safety researchers, and that the vehicle lap and shoulder belt should be used as it is designed to be used in the ELR mode. Thus mifold does not recommend switching the retractor into the locking mode in the mifold instruction manual.

Q&A with Jon Sumroy – CEO and inventor of mifold

The most innovative development in car seats in decades

The mifold Grab-and-Go Child Restraint is the most advanced, compact and portable child car safety seat ever invented. It’s more than 10x smaller than a regular booster seat and just as safe.

The first ever patent for a booster seat was issued more than 50 years ago. In 1963, Dean C. Hunter filed a US patent for the “Safety Seat” – a box that lifted up a child and held a lap belt in place across the bones of the child’s hips. Today, half a century later, boosters are essentially the same. mifold changes this. Instead of lifting the child up, mifold does the opposite and holds the seatbelt down to fit the child.

With mifold there is no longer any excuse. With a compact and portable device, a child can easily keep one with them all the time and drivers can keep spares, without cluttering up a car and losing cabin or luggage space. With mifold, a child can always be safe no matter whose car they are in …

What inspired you to design mifold?

The inspiration came from my own needs of being a parent. Back in 2000, I was living in America, and my kids, who were little at the time, were involved in school runs with various neighbours. There were numerous occasions when my kids would be in someone’s car without the correct child restraint, or even without one at all as it was difficult to transfer the bulky booster seat each journey. I wanted a way of having a car seat that was so small that my children could keep it with them in their school bag and eliminate these situations.

However, at that time, I was working a full-time job and life just got busy so the idea was put on hold. But in 2012, a friend of mine sent me an article, that showed research done by the University of Michigan, had found that over half of the kids in America didn’t use a car seat when on the school run. It reminded me of my idea and I knew it should be something that I looked at again.

Read more

From idea to global distribution: can you highlight the hurdles & main milestones along the way?

It is impossible to bring a new, disruptive technology to a mature market without facing challenges and we have dealt with many. Developing a load restraining mechanism, robust enough to withstand the forces in a crash test, while keeping the product tiny was the main challenge.

We overcame this with high-tech mechanical engineering, unique, super tough plastic polymers and strong light materials like 6061T aircraft grade aluminium.

Another issue for mifold was persuading the various regulatory authorities that such a unique product could be classified as a booster seat. No one had envisaged the mifold design when the regulations were drafted. However, we demonstrated that mifold not only met the standards but exceeded it in many ways and performed very well compared to the existing products on the market.

Having said that, there have also been so many great successful milestones for us in this short period of time. We successfully completed three rounds of fundraising worth several million pounds from investors around the world.  It is a wonderful feeling to have people support your idea like that. Then we ran a crowd-funding campaign to pre-sell the seats. We set a target of $40,000 for the two-month campaign.

A highlight was when we achieved the $40,000 in less than two hours and went on to pre-sell more than $2.5m from 130 countries worldwide.  A personal favourite was flying to the USA to hand deliver the first mifold and seeing them being used by children for the first time.

Finally, we received the ‘Create the Future’ design award from NASA which was a true validation and endorsement of the product for the business and the entire mifold team.

What would you say has been your greatest achievement so far with mifold?

As I mentioned above, there have been many highlights. However, the greatest achievement was a simple post on our Facebook page. A mother Kylynne H. posted that she had been in a collision and two of her children, aged 8 and 6 years old were restrained with mifold. She wrote “I know without a shadow of a doubt that my kids were saved because they were properly placed in … booster seats. I have been wondering how the mifolds would withhold a wreck, and I am now 100% confident in saying they work!! My babies are safe!”

What more is there to say?

How does the mifold fit into the mix of car seats sold in the UK?

The mifold Grab-and-Go child restraint has not been created to replace the existing booster seats but instead offers a totally different idea. It has been designed to make sure that people can use a mifold in those times when a regular child car seat is not available.

There are many journeys where children do not have a booster (in fact we estimate in as many as 25% ) in school run, with grandparents or other relatives, in taxis, on holiday, in rental cars, sitting three-in-a-row and so on.  And this does not include bigger kids on the border of the regulatory limits, who do not want to appear babyish in front of their friends, who have already outgrown child restraints.

We want to eliminate these risks completely and with mifold we have created a solution. With a compact and portable device, there are no excuses, a child can always be safe no matter whose car they are in. The mifold makes life easier yet keeps the child just as safe as any of the other booster seats do.

Please explain the uses of mifold and how it’s an addition to the family of car seats that parents already own

As said above, there are many situations where a booster seat is either not available or it is simply too hard to transfer from one car to another on a daily basis. We noticed there was a safety gap that needed to be filled and quickly.

Due to the fact that the mifold is so compact and portable, it means a child never has a reason to not be in a car seat. Those journeys, such as the ones mentioned above, are all examples of situations when children are often found to not have a booster seat. We have made it so that should never be the case again.

Can you expand on the speculation regarding UK booster seat laws and your message to concerned parents to ease their minds?

The law is in fact very clear. Existing booster seats and cushions such as mifold are NOT affected by the new rules. This has been clearly stated by the Government and can be seen on their website here.

Final products have been crash tested multiple times in testing facilities around the world and have successfully complied with the performance requirements of all these regulations.

The European regulators whom we received the EU ECE R44.4 safety regulation from are entrusted with monitoring the safety of children in cars. Their commitment to continue to license all existing booster seats for sale and continued use, including mifold, is their recognition that booster seats are a safe, well-established, practical, proven and cost-effective method of restraining children in cars. This is the reassurance that our product is safe.

Fast forward 5 years – what do you see for mifold?

In just 12 months we have developed successfully from a simple idea to a successful crowd-funding campaign and finally to having mifold in the retail market.  In another year from now, we will have more exciting products to offer and we hope to continue to develop and grow year after year.

To answer your question specifically about five years, we believe you will see us competing with the best companies in our industry and be internationally recognised.  Our hope and vision is that every child will be carrying a mifold in their backpack and every family will have several of our products in their cars, backpacks and other places.

Any new inventions in the pipeline?

At the moment we are a one-product company! However, we have a number of new exciting products in the pipeline, which we will be introducing within the next few years.

What 3 qualities do you believe a person needs to own in order to put their great idea into motion?

Passion: I firmly believe that every child should be able to be kept safe in every vehicle and situation and this has been the driving force behind my vision for four years.

Determination: Refusing to stop in front of obstacles that block you from reaching your goal and to continue to pursue your goals in spite of them.

Luck: Being open to recognising and identifying new opportunities as they present themselves

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