Features: -The lightest seat in its class: 2.4 kg * (5.3 lb) only Aeroflex ™ soft, lightweight foam absorbs and diffuses energy to minimize force transfer -High-performance materials, including astronaut-grade aluminum, and lightweight fabrics that combine to form an elegant and safe seat -Base equipped with steel-reinforced True lock ™ installation device -Set in less than five seconds and in two easy steps -Indicators color that reduce the risk of error during installation -Total protection removable cap with 50+ SPF and retractable sun visor -Removable headrest with patented tailor tech ™ viscoelastic foam that provides comfort for baby's growth -Five points harness that keeps toddlers in place -Protection in case of side impact, for optimal security -Set on all Nuna strollers to create a nice travel system Recommended use: rear-facing for a baby from 1.8 kg to 10 kg (4-22 lb) and up to 81.3 cm (32 in)