*Returns not accepted on any opened, used, or defective product. Contact manufacturer directly for further defective products/parts. From Uppababy, this car seat features: An extra Aria Infant Car Seat base allows you flexibility and ease of travel. Ideal for multiple family vehicles no more swapping car seat bases between relatives, babysitters, or spouses! Load leg for increased safety and reduction in head/neck injury Four-position adjustable foot for easy leveling Anti-Rebound+ Panel for increased safety Bubble level indicators on both sides to aid in getting the correct angle during installation (Included 04-month label to instruct on use with Robust Infant Insert) Auto-retracting LATCH for effortless installation Built-in lock-off for secure seatbelt installation SmartSecure System + Red-to-Green indicators Streamlined, low-profile base with finished bottom in all black GREENGUARD® Gold Certified to support healthier air quality and low chemical emissions Compatible with Aria and Mesa Max infant car seats Not compatible with Mesa and Mesa V2 infant car seat Imported.