Returns are not accepted on any opened, used, or defective product. Contact the manufacturer directly for further defective products/parts.  From Cybex, this car seat features:  All-In-One Convertible Car Seat offers 10 years of use and 3 Modes - Rear-facing from 4 lbs. to 50 lbs. Forward-facing from 22 lbs to 65 lbs, Belt-positioning Booster from 40 lbs to 120 lbs SensorSafe car seat safety technology uses a Bluetooth enabled chest clip to send mobile app alerts when potential unsafe situations arise (not used in Belt-positioning Booster mode) Adjustable Linear Side-impact Protection (L.S.P. System) absorbs up to 25% more impact forces in the event of a near side impact collision, when compared to the same car seat without L.S.P. extended Patented 3-position reclining headrest helps protect the child’s neck and head in the case of a side-impact In-seat recline provides correct ergonomic positioning and extra legroom, allowing your child to safely ride rear-facing longer 12-position, height-adjustable headrest with an integrated no-rethread harness for protection that grows with your child 6-position one-hand adjustable recline for the best fit to your car Magnetic buckle holders for easy entry and exit from the seat Removable newborn inlay provides additional support for very small babies (4 lbs. to 11 lbs.) Removable cup holder can be positioned on either side and is dishwasher safe for easy clean up harness pads and 2-position padded buckle for comfort Steel reinforced frame provides strength and durability Energy absorbing shell and base help reduce the forces felt by the child in a collision Dual Belt adjusters to ensure a tight fit Dual-level indicators to help ensure the proper angle Innovative one-pull LATCH removal system LATCH Connection storage provided under the seat when not in use Designed and engineered in Germany Imported. Cybex Eternis S All-In-One Convertible Car Seat with SensorSafe