Kinderkraft Oneto3 i-Size Car Seat – Group 1/2/3 with ISOFIX & Top Tether | 76–150cm

Name: Kinderkraft Oneto3 i-Size Car Seat – Group 1/2/3 with ISOFIX & Top Tether | 76–150cm
Brand: Kinderkraft
SKU: KCONE300BLK0000
Price: 104.45 GBP
Availability: InStock

£104.45 GBP

Tax included. Shipping calculated at checkout.

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This product meets UK safety regulations. Read our Product Safety & Compliance policy

The Kinderkraft Oneto3 Group 1/2/3 i-Size Car Seat in Graphite Black is built for long-lasting safety, comfort, and convenience. Designed for children from 76 to 150cm tall (approx. 15 months to 12 years), it meets the latest R129 i-Size European safety standard, offering top-tier protection across all growth stages.

Equipped with both ISOFIX connectors and a TOP TETHER strap, the Oneto3 ensures secure and stable installationin your vehicle. It features advanced safety technologies, including the H-GUARD SYSTEM, a three-layer reinforced headrest that protects the head and neck, and SIDE PROTECT SYSTEM (SPS), which adds extra protection in the event of a side collision.

Comfort is also at the forefront, with a reclining function, removable inserts, and the Easy GROW SYSTEM, allowing the seat to adjust in height and width as your child grows. Whether it’s a short school run or a long road trip, the Oneto3 delivers dependable protection and all-day comfort.

Product Highlights

Suitable from 76–150 cm (approx. 15 months to 12 years)
R129 i-Size certified for maximum safety
ISOFIX + TOP TETHER installation
3-layer H-GUARD SYSTEM headrest for head and neck protection
SIDE PROTECT SYSTEM (SPS) for side impact safety
Reclining function for added comfort on long trips
Easy GROW SYSTEM adjusts headrest and harness as your child grows
Removable insert for smaller children
10-year warranty upon registration
Graphite Black finish – sleek and modern look

Features and Benefits

Advanced Safety Systems
Includes SPS for side collisions and the H-GUARD SYSTEM, a triple-layered headrest that reduces the risk of injury in an accident.
i-Size Compliant
Built to meet the latest R129 safety standard, offering greater protection and more rigorous crash testing.
Grows With Your Child
Use from 15 months up to 12 years, adjusting the seat with the Easy GROW SYSTEM for long-term value and comfort.
Quick & Secure Installation
ISOFIX and top tether ensure a safe, solid fit into your vehicle while minimizing the risk of incorrect installation.
Custom Comfort
The reclining seat, padded interior, and removable insert offer excellent support whether your child is awake or asleep.
Hassle-Free Maintenance
Durable and easy to clean materials help maintain a fresh, tidy look over years of use.

Technical Specifications

Product Name: Kinderkraft Oneto3 Group 1/2/3 i-Size Car Seat
Colour: Graphite Black
Child Height Range: 76–150 cm
Age Suitability: Approx. 15 months to 12 years
Installation Method: ISOFIX with Top Tether
Safety Standard: ECE R129 (i-Size)
Recline Function: Yes
Adjustable Headrest: Yes – via Easy GROW SYSTEM
Harness: 5-point (removable for booster mode)
Removable Insert: Yes
Warranty: 10 years upon registration
Weight: 11 kg

Dimensions

Folded: H58 x L58 x W44 cm
Unfolded: H78 x L58 x W44 cm
Internal Seat Length: 32 cm
Lie-flat Length: 58 cm
External Width: 47 cm
Internal Seat Width: 32 cm
Backrest Width (Internal): 32–38 cm
Headrest Width (External): 38 cm
Headrest Width (Internal): 27.5 cm
Minimum Height (External): 58 cm
Maximum Height (External): 78 cm
Minimum Height (Internal): 48 cm
Maximum Height (Internal): 74 cm