The Britax Duo was the first Isofix seat on the market for children from 9-18kg (approx 9 months to 4 years old). Isofix is a standard car seat installation system that creates a rigid link between the child seat and the car and removes the risk of slack installation that can occur when car seats are installed using an adult seat belt. The Britax Duo Isofix seat can also be installed using a regular lap and diagonal seat-belt for the odd trips in cars without Isofix points. As a result of a
