The Maxi-Cosi Topaz i-Size high back booster seat is designed to keep your child safe and comfortable from around 3.5 to 12 years (100–150cm, 15–36kg). Approved to the latest i-Size (R129) standard, it is a long-lasting booster that grows with your child from their first big-kid seat right up to the point they no longer need one.
Safety comes first. Maxi-Cosi's G-CELL side impact protection is built into the side wings to help absorb energy in a side collision, while the ISOFIX connectors lock the booster firmly to your car for a stable, secure fit. Your child is held in place by the car's own 3-point seat belt, routed through clearly marked belt guides so it sits correctly across the shoulder and hips.
As your child grows, the headrest and side wings adjust upwards with a simple pull, so the seat always fits properly. The high seating position gives children a better view out of the window, and soft padding keeps longer journeys comfortable. The cover is made from soft, durable Eco Care fabric and can be removed and washed when needed.
When the seat is not in use, the Topaz i-Size folds into a compact shape, making it easy to store in the boot, carry between cars or take on holiday. Weighing just 5.32kg, it is light enough to move without a struggle.
The Maxi-Cosi Topaz i-Size in Full Graphite is a smart, forward-facing ISOFIX booster seat for school-age children, with free UK mainland delivery.
The Maxi-Cosi Topaz i-Size high back booster seat is designed to keep your child safe and comfortable from around 3.5 to 12 years (100–150cm, 15–36kg). Approved to the latest i-Size (R129) standard, it is a long-lasting booster that grows with your child from their first big-kid seat right up to the point they no longer need one.
Safety comes first. Maxi-Cosi's G-CELL side impact protection is built into the side wings to help absorb energy in a side collision, while the ISOFIX connectors lock the booster firmly to your car for a stable, secure fit. Your child is held in place by the car's own 3-point seat belt, routed through clearly marked belt guides so it sits correctly across the shoulder and hips.
As your child grows, the headrest and side wings adjust upwards with a simple pull, so the seat always fits properly. The high seating position gives children a better view out of the window, and soft padding keeps longer journeys comfortable. The cover is made from soft, durable Eco Care fabric and can be removed and washed when needed.
When the seat is not in use, the Topaz i-Size folds into a compact shape, making it easy to store in the boot, carry between cars or take on holiday. Weighing just 5.32kg, it is light enough to move without a struggle.
The Maxi-Cosi Topaz i-Size in Full Graphite is a smart, forward-facing ISOFIX booster seat for school-age children, with free UK mainland delivery.







