*Returns are not accepted on any opened, used, or defective product. Contact the manufacturer directly for further instructions regarding defective products/parts. From Cybex, this car seat features: Age range: from newborn up to approx. 18 months Child height: max. 32" Child weight: from 4 lbs. up to 35 lbs. Group: infant car seat 11-position adjustable headrest Linear side impact protection (L.S.P) In-shell air ventilation SAFELOCK™ base Chemical free flame resistant fabric Easy-in buckle pad 11-Position Adjustable Headrest: An integrated no-rethread harness adjusts with the headrest, ensuring a proper fit for your child as they grow. Advanced Side-Impact Protection: Integrated into the shell, the Linear Side Impact (L.S.P) protection system effectively reduces collision forces on the child in a side-impact crash. In-Shell Air Ventilation: Cooling airflow on hot days. Ventilation channels built into the shell allow natural airflow to pass through the car seat, keeping your child comfortable. Oversized Sun Protection: Protect your baby from the elements with an extended UPF 50+ canopy. Compatible with: All Cybex strollers Aton G base Infant car seat rain cover Infant car seat insect net Infant car seat sunshade Imported.