From Nuna Lumn™ ,this car seat features: 5-point no-rethread harness stows away when converting to booster 9 recline options in both harness and booster modes when tethered Bubble-free recline guides confirm the perfect riding angle 10-position height-adjustable headrest to accommodate growth Machine-washable fabrics and inserts seat pad removes separately for added convenience Slim design fits 3 across in most mid-sized vehicles Airline approved and FAA-certified for use in harness mode All-steel frame and reinforced belt path for superior protection Aeroflex™ side impact protection system uses lightweight EPP foam to absorb energy and minimize force transferred during a side-impact collision Certified to latest side and frontal impact standards (FMVSS No. 213a and 213b) True tension™ door for a secure install in harness mode Open belt path provides an easier path for booster-mode buckling Push on latch connectors secure the car seat to the vehicle anchor points Recommended use: To use this child restraint, your child must meet BOTH the weight and height requirements below: Weight: 30-110 lb Height: 34-57 in. In harness mode, child must be at least 30 lbs up to 65 lbs and between 34-49" tall. In booster mode, child must be at least 40 lbs up to 110 lbs and between 43-57" tall. Car seat dimensions (highest position) L 26.25 in W 18.25 in H 32.5 in Car seat dimensions (lowest position) L 23.5 in W 18.25 in H 25.5 in Weight: 26.2 lbs Imported.  *Returns not accepted on any opened, used, or defective product. Contact manufacturer directly for further instructions regarding defective products/parts. Features: