Avionaut MaxSpace Smart High Back Booster Car Seat – Black

Avionaut MaxSpace Smart High Back Booster Car Seat 

The Avionaut MaxSpace Smart High Back Booster Car Seat is designed to provide exceptional comfort, ergonomic support, and advanced safety for growing children. Suitable for forward-facing travel from 100–150cm (approximately 3 to 12 years or 15–50kg), this thoughtfully engineered booster combines refreshed upholstery with Avionaut’s trusted MaxSpace design to support healthy posture at every stage of development.

Certified to the latest R129/03 safety standard and featuring additional side impact protection, the MaxSpace Smart offers parents peace of mind while ensuring a comfortable and supportive ride for their child on every journey.

Ergonomic Comfort & Spinal Support

Developed in collaboration with leading ergonomic experts, the MaxSpace Smart is renowned for its focus on correct posture and spinal health. The profiled deep seating, combined with additional cushioning, naturally contours the pelvis and reduces pressure on the lower coccyx to support spinal alignment.

A profiled backrest ensures optimal body positioning, while shaped cushioning in the cervical and lumbar areas provides targeted support and stability, helping to relieve muscle tension and reduce the risk of back discomfort during longer journeys.

Acknowledged and accredited by the AGR (German Association for Healthy Back), this seat is an excellent choice for growing children who need consistent ergonomic support.

Rest Position & Everyday Practicality

A key feature of the MaxSpace Smart is its backrest tilt functionality, allowing the seat to be placed into a comfortable resting position. This rare feature for a high back booster helps prevent head drooping when your child falls asleep, making journeys safer and more comfortable.

Easy Installation & Peace of Mind

The MaxSpace Smart can be installed using either the vehicle seatbelt or Isofix connectors, with intuitive belt routing guides and colour indicators to confirm correct installation. This ensures quick, secure fitting in a wide range of vehicles.

All Avionaut car seats are backed by an extended warranty for added reassurance.

Key Features

• Suitable from 100–150cm (approx. 3–12 years or 15–50kg)
• Forward-facing high back booster design
• R129/03 approved
• Advanced side impact protection system
• AGR-accredited for healthy back support
• Profiled deep seating to contour the pelvis and reduce coccyx pressure
• Profiled backrest for correct body positioning
• Targeted cervical and lumbar spine support
• Backrest tilt functionality with resting position
• Refreshed upholstery finish
• Belted or Isofix installation options
• Colour indicators for correct installation
• Extended Avionaut warranty

Dimensions

• Size: 50 x 49 x 71 cm

For new items

We offer 28 day returns, as long as the item comes back to us as new. If the packaging has been opened we deduct 10% so we can pass it on as open box. Return postage is at your cost unless the item is faulty. You'll find the full details on our Returns & Refunds page.

For pre-loved items

Pre-loved items are sold as seen, as the manufacturer's warranty ends when ownership changes. If it isn't quite right, you have 28 days to return it at your own cost, with a £25 admin fee deducted. And if a fault appears within 3 months of purchase, we'll cover the repair. The full details are on our Returns & Refunds page.