Baby
0 – 13kg (Birth – Approx. 15 Months)
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Visit Store Click here to stay on this storeFirstly, ensure you are looking at the correct models for your child, click on the categories below organised according to the age and weight of your child…
*Some of our seats are designed for a more specific weight/height group (eg Birth to 13kg/87cm). Our All in All range is an “All Stages” seat and is designed to cover a much wider weight/height range (Birth to 36kgs/150cm). Therefore, the All in All Range will appear in all of the categories below.
There are the two separate, current car seat standards that you need to be aware of to meet car seat legislation across Europe: R44 and R129/i-Size. Children up to the age of 12 years old or under a set height (135cm) should always travel in a car seat that meets one of these approved standards.
R129/i-Size is the latest standard that has been introduced. With an R129/i-Size car seat you choose the seat depending on your child’s height, not weight.
The ECE R44 standard has been in place for many years and the car seats are defined by groups; 0+ (birth to 13 kg), 1 (9 to 18 kg), or 2/3 (15 to 36 kg). All these groups are based on your child’s weight, not height - as used for R129/i Size regulation.
As ECE R44 is an older standard, it is planned to be gradually phased out. The reason for the gradual change is that seats made to the newer R129/ i-size standard are usually significantly more expensive. PLEASE NOTE: At present there is no clear date for phase out of ECE R44 seats in mainland UK and be assured they are perfectly safe to buy and use.
About ECE R44: This standard recommends that your child travels rearward-facing for at least 9 months but with R129 it is mandatory that your child travels rearward-facing for longer – 15 months.
Seats that have specific features that are designed to be compatible with i-Size cars, to avoid misfitting.
Shop NowSeats are proven to be safer for younger children in a collision. That’s why we have developed our ERF collection to protect children up to 18kg (approx. 4 years old)
Shop NowCosatto offer a selection of car seats, some of which can be installed using the adult seat belt in the car.
Shop NowA child car seat attachment system that uses metal anchor points built into the chassis of the car. The ISOFIX connectors from the baby or child car seat fit onto these.
Shop NowThe support leg works together with the ISOFIX points, to ensure a secure fit and to prevent the seat from tipping and rotating in a collision.
Shop NowThe top tether works together with the ISOFIX points, to ensure a secure fit and to prevent the seat from tipping and rotating in a collision.
Shop NowIt is paramount that in addition to performing in crash tests, our seats remain safe as they are used over time.
Wear and tear to the materials that make up a car seat can render a seat not fit for purpose and to that end we always ensure ours stand the test of time, keeping your child safe for many years.
Here are some examples of the tests we perform:
We open and close the buckle
5000 times
We tighten and loosen the harness
2500 times
We rotate the seat
2000 times
The 5 Point Plus Anti-Escape System is attached on to the harness, reducing the space so there’s less room for your child to wriggle their arms through. In tests, 9 out of 10 children could not get their arms out of the harness, making it virtually impossible to escape.
LEARN MOREIn our quest to bring you the safest seats we work hand in hand with leading experts in the car seat safety field. We have strong relationships with these key players in the UK, enabling us to keep you and yours safe on your journey.

BPIA was set up to inform and promote the safe use of baby, nursery and childcare products in the UK and Europe. We have been active members for many years, sitting on a Technical Committee with other industry experts and are involved in setting new and changing standards in the industry ensuring we are always aware of any changes and developments.
Learn MoreIOSH is the chartered body and largest membership organisation for health and safety professionals. We ensure that the key team members at Cosatto involved in product development, technical and customer service fully understand the subject of child car seat safety. We are constantly updating this knowledge and use it every day to ensure we are providing the best products, advice and service in this area.
Learn MoreCSS are Road Safety Great Britain’s national advisors for child car seats with over 50 years experience. We work with them to assess all our new and existing seats, ensuring they exceed customer expectations.
Learn MoreJMDA are an award-winning British product design consultancy focused on innovative design and engineering excellence within the car seat industry. We work hand in hand with them to analyse laboratory test results, perform additional (bespoke) crash tests in their own laboratory and to bring you our essential Car Seat Fit Checker ensuring the best fit in your car.
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An essential part of choosing the safest seat is ensuring that it is suitable for your car. A badly fitting car seat can compromise the safety of your child. Use this tool to check which car seats are suitable for your child and your car.
FIT CHECKER
As reassurance of our commitment to your peace of mind, we bring you an industry leading 4-year guarantee. This offers a dedicated UK based customer care team and 24/7 online access. With door-to-door service, in the unlikely event you need us, just contact us from the comfort of your home.
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Check out our range of car seat demo videos. Compare, learn and discover all you need to know about your favourite Cosatto products.
WATCH VIDEOSWe recommend replacing any car seat that has been involved in a crash. Even if it looks fine, there could be internal damage that would make it unsafe. The seat has done its job by protecting your child and therefore needs replacing. Most insurance companies will cover this expense. To be safe, please request a police report on the accident.
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