The Maxi-Cosi Pearl One i-Size is used in combination with the FamilyFix One i-Size. The Pearl One i-Size offers state-of-the-art safety performance by complying with the latest i-Size (R129) car seat legislation. The Pearl One i-Size has the Swedish PLUS-test certificate and enables up to 105 cm (approx. 4 years) of rearward-facing travel. The Pearl One i-Size provides optimal ease of use with an easy-in harness and full recline options. The FamilyFix One i-Size base will provide visual and audible confirmation when the connection is secure.