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Maxi-Cosi
Car Seats

Maxi-Cosi Onyx i-Size, Isofix, 15m - 12y Car Seat

£179.99 £199.99
Tax included

Maxi-Cosi Onyx i-Size Car Seat

i-Size | Child Height: 76 to 150 cm | Age: 15 months - 12 years approx. | Weight: 9-36 kg

The Maxi-Cosi Onyx i-Size Car Seat offers top-tier safety and unmatched comfort for children aged 15 months to 12 years (76-150 cm). With advanced G-CELL side impact protection, multiple recline positions, and a 5-point safety harness, the Onyx ensures a secure and cosy ride for every stage of childhood.

The Maxi-Cosi Onyx is a forward-facing car seat designed to grow with your child, providing ultimate protection and convenience. It meets the highest i-Size (R129/03) safety standards, ensuring maximum security during forward and side collisions with its G-CELL technology and memory foam headrest. The 5-point harness ensures optimal protection up to 4 years (105 cm), then conveniently stows away, transforming the seat into a high-back booster for older children.

Comfort is key, with five recline positions and a height-adjustable headrest to support your child on every journey, whether they're napping or enjoying the view. Plus, its sustainable 100% recycled fabric provides an eco-friendly touch, while machine-washable covers make maintenance effortless.

What’s Included

  • Maxi-Cosi Onyx i-Size Car Seat

Product Highlights

  • Multi-age usability: Suitable from 15 months to 12 years (76-150 cm).
  • i-Size compliance: Meets R129/03 safety standards for the highest protection.
  • G-CELL technology: Superior side impact protection reduces injury risk.
  • 5-point harness: Offers optimal safety up to 4 years (105 cm).
  • Recline positions: Five recline settings for maximum comfort during trips.
  • Sustainable design: Crafted with 100% recycled fabric.
  • Machine-washable covers: Easy maintenance with covers that clean up to 30°C.

Features & Benefits

  • Safety-focused design: Integrated ISOFIX connectors keep the seat securely installed.
  • G-CELL panels: Advanced side impact technology absorbs collision forces.
  • Memory foam headrest: Provides enhanced protection and comfort.
  • 5-point safety harness: Ideal for younger children; transitions seamlessly to booster mode.
  • 10-position adjustable headrest: Accommodates your child’s growth with ease.
  • Compact frame: Space-saving design fits most vehicles without compromising comfort.
  • Eco-friendly materials: Sustainable fabric made from recycled plastic bottles.
  • Comfortable recline positions: Perfect for naps or relaxed seating.
  • Hassle-free harness storage: Easily stows away to convert to a booster seat.
  • Easy-clean covers: Machine washable and removable for convenience.

Specifications / Size & Fit

  • Child height range: 76-150 cm
  • Child weight range: 9-36 kg
  • Product dimensions: (Add specific dimensions here if available)
  • Weight: 11 kg
  • Recline positions: 5
  • Harness positions: 13
  • i-Size compliant: Yes

Compatibility

  • Compatible with Maxi-Cosi breathable car seat cover for added comfort (sold separately).

Ideal Uses

  • Long car journeys, everyday commutes, and extended trips where safety, comfort, and adaptability are essential.

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Maxi-Cosi Onyx i-Size Car Seat

i-Size | Child Height: 76 to 150 cm | Age: 15 months - 12 years approx. | Weight: 9-36 kg

The Maxi-Cosi Onyx i-Size Car Seat offers top-tier safety and unmatched comfort for children aged 15 months to 12 years (76-150 cm). With advanced G-CELL side impact protection, multiple recline positions, and a 5-point safety harness, the Onyx ensures a secure and cosy ride for every stage of childhood.

The Maxi-Cosi Onyx is a forward-facing car seat designed to grow with your child, providing ultimate protection and convenience. It meets the highest i-Size (R129/03) safety standards, ensuring maximum security during forward and side collisions with its G-CELL technology and memory foam headrest. The 5-point harness ensures optimal protection up to 4 years (105 cm), then conveniently stows away, transforming the seat into a high-back booster for older children.

Comfort is key, with five recline positions and a height-adjustable headrest to support your child on every journey, whether they're napping or enjoying the view. Plus, its sustainable 100% recycled fabric provides an eco-friendly touch, while machine-washable covers make maintenance effortless.

  • Maxi-Cosi Onyx i-Size Car Seat
  • Multi-age usability: Suitable from 15 months to 12 years (76-150 cm).
  • i-Size compliance: Meets R129/03 safety standards for the highest protection.
  • G-CELL technology: Superior side impact protection reduces injury risk.
  • 5-point harness: Offers optimal safety up to 4 years (105 cm).
  • Recline positions: Five recline settings for maximum comfort during trips.
  • Sustainable design: Crafted with 100% recycled fabric.
  • Machine-washable covers: Easy maintenance with covers that clean up to 30°C.
  • Safety-focused design: Integrated ISOFIX connectors keep the seat securely installed.
  • G-CELL panels: Advanced side impact technology absorbs collision forces.
  • Memory foam headrest: Provides enhanced protection and comfort.
  • 5-point safety harness: Ideal for younger children; transitions seamlessly to booster mode.
  • 10-position adjustable headrest: Accommodates your child’s growth with ease.
  • Compact frame: Space-saving design fits most vehicles without compromising comfort.
  • Eco-friendly materials: Sustainable fabric made from recycled plastic bottles.
  • Comfortable recline positions: Perfect for naps or relaxed seating.
  • Hassle-free harness storage: Easily stows away to convert to a booster seat.
  • Easy-clean covers: Machine washable and removable for convenience.
  • Child height range: 76-150 cm
  • Child weight range: 9-36 kg
  • Product dimensions: (Add specific dimensions here if available)
  • Weight: 11 kg
  • Recline positions: 5
  • Harness positions: 13
  • i-Size compliant: Yes
  • Compatible with Maxi-Cosi breathable car seat cover for added comfort (sold separately).
  • Long car journeys, everyday commutes, and extended trips where safety, comfort, and adaptability are essential.