*Returns not accepted on any opened, used, or defective product. Contact manufacturer directly for further defective products/parts. An extra MESA Max 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. The SmartSecure™ System makes correct installation quick and easy. The Mesa Max Infant Car Seat Base is not compatible with the Mesa or Mesa V2 Infant Car Seat models. Features: SMARTSecure™ System installs in seconds Bubble level indicator on both sides Red-to-green tightness indicator Auto-retracting LATCH for effortless installation Built-in lock-off for secure seat belt installation Streamlined, low-profile base with finished bottom. Base weight: 9.9 lbs