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- Adjustable headrest 14-position height adjustment for optimum seating comfort
- Flexible installation possible with or without Isofix system
- 180° swivel function for easy getting in and out
- optimized side-impact protection thanks to memory foam and widely protruding flanks
- 4-way adjustable recline position for relaxed travel up to 125 cm
- Easy to care for & durable thanks to robust core and washable cover

Flexible comfort for growing children
The One maxi child car seat incl. Isofix base from Osann accompanies your child safely and comfortably from around 3 years of age up to school age. Suitable for children from 100 to 150 cm tall, the child car seat impresses with a spacious, ergonomically shaped seat and a 14-position height-adjustable headrest that grows with your child. This ensures that your child sits comfortably and safely at all times - no matter how fast they grow.
Rotatable & adaptable
The 180° swivel function ensures maximum comfort: this makes getting in and out of the seat effortless, even in tight spaces. In the direction of travel, you can adjust the seat to four comfortable sitting and resting positions up to a height of 125 cm - perfect for relaxed rides or a nap on the go. The One maxi can be installed flexibly with or without Isofix, while the adjustable Isofix connectors guarantee a stable hold without slipping.
Optimum protection & well thought-out details
The One maxi scores points with its optimized side impact protection: memory foam in the headrest and widely protruding flanks reliably protect the head, shoulders and pelvis. Clever belt guides in the head area and a lap belt hook prevent the belts from cutting in unpleasantly. The robust HDPE plastic core makes the seat particularly durable, while the soft cover is removable and washable at 30 °C - for easy care.
- Recommended age: approx. 3 - 12 years, 100-150 cm tall
- Material: HDPE plastic body, 100% polyester cover
- Care instructions: Cover machine washable at 30 °C
- Certification: ECE R129/04
- Osann child seat One maxi - Universe Grey
- Osann child seat One maxi - Universe Grey
Product Group: | 3 |
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Color: | Black, Grey |
Recommended Min. Age: | 36 month(s) |
Recommended Max. Age: | 144 month(s) |
Shipping Date: | 13.08.2025 |
Brand: | Osann |
Product type: | Toodler & child car seats |
Age recommendation: | 3 Jahre bis 12 Jahre |
Child's weight : | 18 - 36 kg |
Child's height : | 100 - 150 cm |
European safety standard: | ECE R129 (i-Size) |
Car seat group: | Group 2/3 |
Backrest: | 4x adjustable |
Headrest: | Steplessly adjustable |
Seat width: | Not adjustable |
Functions: | Grow-along, Rotating, Rotating |
Semi-reclining position: | Yes |
Reclining position: | No |
Approved for air travel: | No |
Features: | Isofix base, Side-impact protection |
Installation method: | Isofix base, Vehicle seat belt |
Facing position: | Forward facing |
Restraint method: | Vehicle belt |
Product dimensions (L x W x H): | 48.5 x 43 x 58 cm |
Weight: | 11.4 kg |
Material cover: | 100% Polyester |
Cover: | Removable |
Washing instructions: | Machine wash - gentle or delicate at max. 30 °C |
Tumble drying: | Do not tumble dry |
Ironing: | Do not iron |
Scope of delivery: | kindersitz |
Our product code: | 202500001400 |
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Osann product code: | 103-348-252 |
EAN/GTIN: | 4016428016239 |
Supplier Name: | Osann |
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Manufacturer Name: | Osann GmbH |
Manufacturer Street: | Gewerbestraße |
Manufacturer House Number: | 22 |
Manufacturer Zip Code: | 78244 |
Manufacturer City: | Gottmadingen |
Manufacturer Country: | Deutschland |
Manufacturer Phone Number: | +49 (0) 7731970077 |
Manufacturer Email: | info@osann.de |
Our product code: | 202500001400 |
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Osann product code: | 103-348-252 |
EAN/GTIN: | 4016428016239 |