Axkid ONE 3+ Car Seat | 40 - 125cm or 23kg
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Axkid ONE 3+ Car Seat: Award-Winning Safety with Plus Test and Isofix (40-125cm)
The Axkid ONE 3+ represents the pinnacle of ISOFIX car seat safety. It is one of the only seats on the market with Swedish Plus Test certification and R129 (i-Size) approval, allowing travel exclusively rear-facing from birth (40 cm) up to approximately 7 years of age (125 cm / 23 kg). Uncompromising safety and longevity.
This "Plus" version includes a comfortable and safe newborn insert (40-60 cm), allowing use from day one.
Key Features of the Axkid ONE 3+:
| Safety Standard: | R129 (i-Size) |
| Child Height: | 40 cm to 125 cm (from birth with included insert) |
| Maximum Weight: | 23 kg |
| Approximate Age: | From birth up to ~7 years |
| Installation: | ISOFIX with anti-rotation bar and support leg (Quick installation in < 30 seconds) |
| Direction of Travel: | Exclusively Rear-Facing |
| Isofix System: | Yes |
| Rotation: | No |
| Swedish Plus Test: | Yes, Approved |
| ADAC Test: | Yes, Excellent Results (Test winner in previous versions - e.g., ONE+ 2 with 1.7 "Good") |
Unmatched Safety and Smart Design
The Axkid ONE 3+ has not only passed the rigorous Plus Test, which assesses neck protection in frontal collisions, but it also builds on the success of its predecessors in ADAC tests. Its robust structure, combined with simple and secure ISOFIX installation, ensures maximum protection.
The innovative design allows for sliding legroom adjustment (up to 30 cm) *after* installation, offering unparalleled comfort as the child grows, without compromising safety or space in the car. Despite its robustness, it weighs less than 10 kg.
Everyday Convenience
- Quick Installation: Secure the seat in under 30 seconds thanks to the intuitive ISOFIX system.
- Easy Access: Magnetic holders keep the harness out of the way while placing or removing the child.
- Comfort: Premium fabrics and one-hand adjustable recline system (Advanced Sleep Well System) for calmer journeys.
- Durability: Built with high-quality materials for a long service life.
See how easy it is to install and use the Axkid ONE:
Undecided? Easily compare the features of the Axkid ONE 3+ with other seats in our Seat Comparison Tool!

(Learn about rear-facing, click the image to view our blog)
Manufacturer Information:
Registered brand: AXKID
- Manufacturer name: AXKID AB
- Manufacturer address:
Axkid AB
Göteborgsvägen 94
431 37 Mölndal
Sweden - Manufacturer contact email: info@axkid.com
- General product safety information: https://axkid.com/our-safety-philosophy/
- Additional contact information (PT Distributor): axkid@wobabies.com