The Maxi-Cosi Cabriofix i-Size Car Seat ISOFIX Base keeps your child safe and comfortable from birth up to 12 years. Buy online at Halfords today. This car seat is lightweight yet durable, and built to the highest i-Size safety standards. It features a secure 3-point harness and forward-facing design. This car seat offers a large sun canopy protects your child from bright sunlight, while the ISOFIX base ensures quick and easy installation for everyday peace of mind, for every journey.