The Maxi-Cosi Pearl Smart i-Size is used in combination with the FamilyFix One i-Size base. The Pearl Smart i-Size offers state-of-the-art safety performance by complying with the latest i-Size (ECE R129) car seat legislation, enabling up to 105 cm (approx. 4 years) of rearward-facing travel. The Pearl Smart i-Size provides great ease of use by providing a very easy switch from rearward to forward-facing, and full recline options in both positions. The FamilyFix One i-Size will provide visual and audible confirmation when the connection is secured.