Rank #10 in Best ISOFIX Car Seats 2026: 10 Ranked, and the Spec Fields That Fight the Copy
LETTAS i-Size 360 Rotation Car Seat, 40–150cm
- Rating
- 4.7
- Ratings
- 83
- Rank
- #10
Price and rating as shown on Amazon when we collected them. Both change.
The LETTAS I-Size 360 is a £76.49 convertible car seat that the listing says covers 40-150cm — newborn to 12 years — with a 360° swivel base, five recline levels and dual ISOFIX plus Top Tether fitting. It fills the last place in this guide.
The thing to notice on this one is not the price, it is the disagreement inside the listing. The bullet points say the seat uses "dual ISOFIX + Top Tether for secure installation". The specification table on the same page lists Installation Type as "Seat Belt". Both cannot describe the same fitting method, and the listing does not tell you which one applies to the seat that arrives. Everything below comes from the Amazon listing itself — the bullets, the specification table, the star breakdown and the customer reviews. We have not fitted this seat to a car and we have not crash-tested it.
How those 83 ratings break down
An average hides its own shape. This is the spread behind the 4.7 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £76.49 |
|---|---|
| Customer rating | 4.7 out of 5 from 83 ratings |
| Installation Type (as listed) | Seat Belt |
| Stated in the bullets | Dual ISOFIX + Top Tether |
| Size and age range | 40-150cm, newborn to 12 years (rear-facing 40-105cm, forward-facing 75-150cm) |
| Maximum Weight Recommendation | 36 kilograms |
| Item Weight | 6.7 kg |
| Star breakdown (as listed) | 88 five-star, 6 four-star, 3 three-star, 3 one-star — that is 100 ratings, against the 83 shown on the same listing |
What it is up against
The rivals it was ranked against in Best ISOFIX Car Seats 2026: 10 Ranked, and the Spec Fields That Fight the Copy.
Questions people ask
How does the LETTAS I-Size 360 attach to the car?
The bullet points say "dual ISOFIX + Top Tether". The specification table on the same listing says Installation Type: Seat Belt. The listing does not resolve which one is correct.
What size child does the LETTAS I-Size 360 fit?
The listing gives 40-150cm, newborn to 12 years, with rear-facing use from 40-105cm and forward-facing use from 75-150cm.
Does the LETTAS I-Size 360 rotate?
Yes. The listing states a 360° free swivel, which it says lets you rotate the seat to get a child in and out.
What is the maximum weight for the LETTAS I-Size 360?
36 kilograms, as listed in the specification table.
How many recline positions does it have?
Five, according to the bullet points.
Is the cover washable?
The listing says the full cover is removable and machine washable.
Comments
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