- GROWS WITH YOUR CHILD – Zoomi 3 i-Size is in it for the long haul, growing with your child from nursery to secondary school; from 15 months to 12 years approx, or 76cm to 150cm tall (Group 123 car seat)
- ISOFIX INTEGRATED FITTINGS – No need to buy an extra isofix base with this integrated design by Cosatto. Easy to install, Zoomi 3 i-Size is designed to be compatible with most vehicles and can be fitted using ISOFIX anchor points for added safety and stability with your car’s 3-point safety belt. Choose either belt-only fitting or belt with ISOFIX fittings for added security (ISOFIT)
- FORWARD FACING – The Zoomi 3 i-Size is only a forward facing chair
- SAFE WHILST COMFORTABLE – The Zoomi 3 i-Size has had extensive crash and safety testing as part of the latest R129 / i-Size standard compliance. The i-Size standard takes testing further with mandatory side impact and roll over testing, all using the latest crash test dummies, to help create even safer car seats.
- COSATTO SAFETY PREMIUM – Whilst you can choose either belt-only fitting or belt with ISOFIX fittings for added security the Zoomi 3 i-Size also features the Cosatto-exclusive 5 Point Plus Anti-Escape System. The 5-point safety harness offers extra safety in the event of a collision by distributing the forces over the strongest parts of the body.
- 10 HEADREST POSITIONS & PADDED PROTECTORS – The Cosatto Zoomi 3 i-Size car seat has deep side wings, a thick padded 10-position head rest and side impact protection with shock absorbing memory foam to keep your precious passenger snug.
- BABY SENSORY DESIGN – At Cosatto, we’ve always believed in the power of pattern to engage your baby and promote happiness. This car seat puts your baby at the heart of visual systems, with bold, bright and carefully placed patterns. Each print comes in multiple products such as prams, highchairs, travel systems footmuffs and changing bags for you to complete the look.
- WASHABLE FABRIC – All the removable soft goods. such as the padded seat liner & newborn seat insert, anti-slip chest pads and tummy pad, are washable.
- GUARANTEE – all Cosatto baby goods come with a minimum 4 year guarantee in the box.
COSATTO Zoomi 3 iSize Car Seat – from 76cm up to 150cm (Approx.15 Months to 12 Years), ISOFIT, Adjustable Headrest, Side Impact Protection, Easy Install, R129 Tested (Spot On)
Sale! (11 customer reviews)

£149.99 Last updated on August 11, 2025 10:56 am
Rated 3.82 out of 5 based on 11 customer ratings
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COSATTO Zoomi 3 iSize Car Seat - from 76cm up to 150cm (Approx.15 Months to 12 Years), ISOFIT, Adjustable Headrest, Side Impact Protection, Easy Install,...
£109.95
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£109.95
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July 15, 2025
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£109.95
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July 15, 2025
Since July 15, 2025
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Minimum Height Recommendation | 76 Centimetres |
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Batteries required | No |
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11 reviews for COSATTO Zoomi 3 iSize Car Seat – from 76cm up to 150cm (Approx.15 Months to 12 Years), ISOFIT, Adjustable Headrest, Side Impact Protection, Easy Install, R129 Tested (Spot On)
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yoanna –
Jättefin och stabil stol, rejäl kvalitet. Dottern ÄLSKAR den! Toppbetyg!!!
Kindle Customer –
The harness tangles really easily causing it to have to be thoroughly checked before each use. Not as easy to take in/out as I thought it would be. On reflection would have bought a different seat for my 4 year old granddaughter
W Ahmad –
It comes well packaged securely in a box. The car seat has a beautiful pattern of unicorn with vibrant colours. Fabric is soft and plush. It is washable but handwash only is recommended.
The seat is well padded with foam and it is very comfortable for the child. The seat can be used for 1 year to 12 years old. It has Iso-fix function and it was very easy to install it in our Toyota prius as our car is compatible for Iso-fix car seats. It also comes with Iso-fiz adapters and has smooth Iso-fiz mechanism. The head rest is adjustable according to child’s height. For little children you can use harness but harness is too small for.children over 3 years old, so you’ll have to use car seat belt to sexure the child. All straps are removable. It has anti-escape system installment as well which is like an extra strap around child’s body for support. The seat comes with the instruction manual with diagrams which will make it easier for you to install it.
The bucle of harness is a bit tricky, so it is a little hard to open amd close it. However, overall it is a fantastic and comfortable seat.
The price is a bit too high at the time of review as it is £129.95. I would give it 4 stars because it is overly priced otherwise the seat is very good.
Emma –
Nos ha encantado.
Cathryn howdle –
Not happy with this car seat!
The crotch strap is to far back, that’s it’s even a struggle for my smaller than average 2 year old, I’ve not even been using for a month and the strap to pull the harness tighter, the stitching is coming loose, the car seat isn’t overly padded, that’s the negatives.
There are a couple of positives, it’s fairly simple to install due to being isofix, it’s a nice pattern, and the cupholder is handy.
Overall it’s budget for a reason, put the extra money to carsea that will actually last.
Em0306 –
Wow, what a fab car seat! I’m really impressed.
It feels so sturdy and secure, and it’s super easy to fit.
The material is soft with lots of padding and my daughter tells me it’s really comfortable.
The designs are quite bold and not for everyone, but my daughter loves it and if it makes her feel happier about being in the car then I can cope with the pink!
Michael Luckhurst –
My experience after 3 weeks of use with my 2.5 year old:
Pros
> Easy installation
> Isofix & top tether combination feels secure & stable
> Our daughter loves the design
Cons
> Buckling up is fiddly and inconvenient
> Tightening the harness is very difficult
I appreciate safety is the most important thing, and the combination of Isofix and top-tether make the seat feel incredibly stable, and installation was pretty straight forward – top marks here. But if you’re not careful, safety can be compromised by the inconvenience of the 5 point harness.
The problems come once the seat is installed, because convenience and ease-of-use are hard to come by. The 5 point harness is fiddly to do up and difficult to tighten. The release button/mechanism works fine, but once our toddler is sat in the seat and ready to be fastened in, the two latch plates from either side that you then need to combine to plug into the buckle have a very shallow overlap, which makes it difficult to keep them together in one hand as you try to align with the buckle. This process is made more awkward by the short strap that attaches the buckle to the base of the seat, as it barely protrudes from the protective padding. Said padding often catches in the buckle as you do it up, adding to the inconvenience and potentially allowing the buckle to appear done up without being completely secure.
Once you’ve fought to fasten the harness, you find that tightening it is even harder work. The strap to do so is conveniently placed front and center, as with every other seat I’ve had any experience with, but even after 3 weeks use, it is incredibly stiff and a real struggle to tighten to a point where we feel our daughter is completely secure. To start with, the strap looped at the end – after two attempts of pulling this to tighten, the stitching gave way and now we have a longer strap with no loop.
I’m finding the day-to-day use of this seat very frustrating.
Felicity Masters –
Love the quality and the look of these seats (brought 2 for my grandchildren) the children love them too, the big downside is that they are very upright and don’t recline which is a big problem when the children fall asleep…no support for tired heads!
Sent out wrong item. Told me it was the right item. No point giving the customer a choice in item because it’s not up to you in the end anyway you just pay more and don’t recieve😅 –
My girls love them and said they’re very comfortable
swarnermeister –
Dudava entre varios modelos de sillas tenemos de britax römer i de kinderkraft i las dos son de muy buena calidad una de le quedo pequeña al peque i la otra la usamos muy poco por que no tiene izofix pero esta igual de buena teniamos que renovar de silla i esta me ha sorprendido lo bien que esta echa esta perfecta no le falta detalle silla recomendable
W Ahmad –
On the plus side, this was easy to fix into the isofix in my car, and easy to get little one in and out (currently 21 months)
However, after doing more research into car seats it’s become apparent that although it’s (currently) legal for a 15month old to forward face, it’s by no means the safest and it feels cosatto repeatedly make claims about safety and just sell a pretty pattern. I will be keeping my little one rear facing until around 4 years, at which point a ‘multi age’ forward facing only seat like this isn’t the best value unfortunately.