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- for tall children from 135 cm the ideal transition from car seat to regular seat belt
- tested safety according to i-Size meets the current standard ECE R129/03 for children up to 150 cm
- flexible installation can be installed with ISOFIX or alternatively with the seat belt
- light & mobile weighs only 2.5 kg and can be easily moved between vehicles
- comfortable seating thanks to wide seat surface, soft padding and sturdy armrests

Comfortable and safe on the go
The I-BOOST i-Size from Kinderkraft is a practical booster seat for children from 135 cm in height who are already too tall for a classic car seat but still too small for the regular vehicle belt. It ensures that the safety belt runs correctly over the shoulder and chest – for a safe journey on all routes. The ergonomically shaped seat surface with soft foam also provides comfortable support on longer trips.
Safe according to i-Size
The booster seat meets the current i-Size safety standard R129 and is suitable for children from 135 to 150 cm. Thanks to the ISOFIX connectors, the I-BOOST i-Size can be securely and quickly installed in the vehicle. Alternatively, it can also be used with the vehicle belt – ideal for older cars without an ISOFIX system. This offers maximum flexibility with consistent safety.
Lightweight, handy and flexible
Weighing only 2.5 kg, the booster seat can be easily taken from one vehicle to another – perfect for families with multiple cars or visits to grandparents. The compact dimensions and thoughtful design with comfortable armrests make the I-BOOST i-Size the ideal solution for the transition from car seat to belt use on the vehicle seat.
- Recommended age: approx. 8–12 years (135–150 cm height)
- Material: Shell made of plastic, cover made of 100% polyester
- Care instructions: Cover removable and washable
- Certification: ECE R129/03 (i-Size)
- Kinderkraft Booster Seat I-BOOST i-Size incl. Isofix - Black
- Kinderkraft Booster Seat I-BOOST i-Size incl. Isofix - Black
Product group: | 3 |
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Color: | Black |
Recommended age min.: | 84 month(s) |
Recommended age max.: | 144 month(s) |
Brand: | Kinderkraft |
Car seat group: | Group 2/3 |
Approved for air travel: | No |
Installation direction: | Forward facing |
Functions: | Grow-along, Reclining function, Rotating |
Restraint method: | Five-point harness |
European safety standard: | ECE R129 (i-Size) |
Cover removable: | Removable |
Seat width adjustability: | Not adjustable |
Scope of delivery: | sitzerhoehung |
Ironing: | Do not iron |
Weight: | 2.5 kg |
Tumble drying: | Do not tumble dry |
Child's height: | 135 - 150 cm cm |
Installation method: | Isofix connectors, Vehicle seat belt |
Product type: | Belted booster seats |
Material cover: | 100% Polyester |
Seating surface (L x W): | 38.00 x 35.50 cm |
Product dimensions (L x W x H): | 51.50 x 35.50 x 20.00 cm |
Washing instructions: | Hand wash at max. 30 °C |
Our product code: | 202500001585 |
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Kinderkraft product code: | KCIBOO00BLK0000 |
EAN/GTIN: | 5902533924813 |
WARN- & SAFETY INSTRUCTIONS
WARNING!
• Ensure that the internal straps holding the child are adjusted to the child’s body structure and are not twisted. For this reason, do not place thick clothing under the strap.
• Pelvic belts must run as low as possible over your child’s pelvis to ensure optimal effect in the event of an accident.
• The seat should be replaced if it has been subjected to sudden stresses during a traffic accident.
• The car seat must not be altered in any way without the consent of the competent approval authority. Failure to install the seat according to the manufacturer’s instructions can pose a danger to life and health.
• The child seat should be protected from direct sunlight, as warmed components can burn your child. Protect your child and your child seat from sunlight.
• Never leave your child unattended in the child seat.
• Ensure that luggage and other items are adequately secured, especially on the shelf under the rear window, as they can cause personal injury in a collision.
• The seat cannot be used without a cover.
• Do not use any replacement covers other than those recommended by the manufacturer, as these are an integral part of the seat’s safety system.
• Do not use any fastening points other than those described in the user manual and marked on the child seat.
• All hard components and plastic parts of the child seat must be placed and installed so that under normal operating conditions they cannot be trapped by the sliding seat or the vehicle door.
• Regularly check the technical condition of the child seat, paying particular attention to the fastening points, seams and adjustment elements. Ensure that all mechanical components are fully functional. Never lubricate or oil the child seat components.
• Do not use the child seat if its parts are damaged or loose.
• In an emergency, it is important to fasten the safety belts. This means that the buckle release button is not fully secured. Make sure your child does not play with the harness.
• Set a good example for your child and always fasten your seat belt. An adult not wearing a seat belt can also pose a risk to the child.
• Before every car journey, ensure the child seat is properly secured.
• The child seat must be secured even when not in use. Even during an emergency stop, an unsecured child seat can cause injury to passengers.
• Some vehicle seats made of sensitive materials may show marks and/or discolouration from the use of child seats. To prevent this, you can place a blanket, towel or similar product under the car seat.
Remove all bags and packaging materials before use.
Our product code: | 202500001585 |
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Kinderkraft product code: | KCIBOO00BLK0000 |
EAN/GTIN: | 5902533924813 |