An infant car seat with ISOFIX fitting and i-Size (R129) for ages 12 years
Kinderkraft ONETO3 I-Size Child Car Seat
Infant car seat from Kinderkraft. It is listed for ages 12 years. ISOFIX connectors for fitting. Listed as i-Size (R129).
£359.99Incl. VAT where applicable
Free UK delivery
ISOFIX connectors for fitting
Listed as i-Size (R129)
Reclining positions
Top tether
Free UK delivery over £150Dispatched within 1–2 business days
14-day returnsSee our returns policy for details
Secure checkoutCard or PayPal. We never see your card details.
About this infant car seat
Check how the seat fits: ISOFIX or seat-belt fitting, your car's compatibility, and the seat's size and weight. It is listed for ages 12 years, so check that against your child's age and size.
Here is what the Kinderkraft ONETO3 I-Size Child Car Seat offers: iSOFIX connectors for fitting, listed as i-Size (R129), reclining positions and top tether. Always follow the manufacturer's fitting instructions, check the seat is suitable for your car, and use the harness or seat belt correctly on every journey. Never use a car seat that has been in an accident.
Safety first. Always read and follow the manufacturer's instructions, check the age and weight guidance, and supervise your child at all times.
What age is the Kinderkraft ONETO3 I-Size Child Car Seat suitable for?
The listing gives ages 12 years. Always follow the manufacturer's guidance in the box for age, weight and how to use it safely.
How do I know it fits my car?
Check the manufacturer's vehicle-fit information for your car and the fitting method (ISOFIX or seat belt). Fit the seat exactly as the instructions say, and email us before ordering if you are unsure.
How long does delivery take and what if I need to return it?
Orders dispatch within 1–2 business days and usually arrive in around a week after dispatch. You have 14 days from delivery to return an item. See our shipping and returns pages for the full details.