It's uncomplicated and un-fussy. The Nuna RAVA convertible car seat is filled with little extras like laid back legroom, fuss-free adjustments and a unique installation that makes setup a snap. RAVA has always included flame resistant fabrics that come in contact with baby and we strive to continuously improve our material make up and manufacturing processes to be as mindful as possible. Now from fabric to foam and beyond, each element is smartly sourced to be both flame resistant and contain no added fire retardant chemicals. So you can relax and enjoy every magical, messy, covered-with crumbs moment. Nuna's preferred installation method is the vehicle seat belt as it eliminates confusion of when to switch from Lower Anchors to Vehicle Seat Belt, fits more vehicle makes, and fits more seating positions Simply Secure Installation is... Bubble-free | Recline angle guides clearly confirm the perfect riding angle; Hassle-free | Same set of simple instructions allows you to install with confidence every time; Muscle-free | True tension doors ensure an ultra-secure fit without the struggle; Features: Keeps children comfortably rear-facing from 5 lbs to a whopping 50 lbs; Accommodates growth up to 65 lbs when forward-facing; Fan-favorite for security, ease-of-use, longevity and sleek design; No-rethread harness makes it easy to adjust for comfort and growth; Fits 3 across in most full-sized vehicles; FAA-certified to travel everywhere and beyond; All-steel frame and reinforced belt path for superior protection; EPO energy-absorbing foam and Side Impact Protection (SIP) pods for ultimate safekeeping; Simply secure installation for confidence every time; True tension doors provide a secure fit without the struggle; Colored belt path indicators decrease risk of install errors; Quick-release 3 to 5-point harness makes it easy to fasten them in; 10-position recline for customized comfort; Bubble-free recline angle guides confirm proper riding angle; Ventilation panels within the shell create a comfy climate; Infant head and body inserts are removable to grow with baby; Calf support extends to provide up to 2 inches of additional legroom for rear-facing relaxation and extra support when forward-facing; Premium moisture-wicking fabric provides all-season comfort; Smartly sourced materials contain no fire-retardant chemicals; Seat pad, body and head support, and harness covers are machine washable; Dual flip-open cup holders for on-the-go refreshment; Specifications Rear-Facing: 5-50 lbs | 49 in or less. Birth to 2+ years old; Forward-Facing: 30-65 lbs | 49 in or less. When rear facing is outgrown, at least 2 years old; Product Weight:27.9 lbs;.