Meet the UPPAbaby Aria Base – your child's travel companion with a focus on safety and comfort. This base ensures a rock-solid seatbelt installation, thanks to its built-in lock-off, offering parents on-the-go the peace of mind they deserve. Plus, the bubble level indicators on both sides make finding that perfect installation angle a total breeze. Crafted with precision, the UPPAbaby Aria Base has a specific angle for the infant inlay range, tailored to your little one's unique needs. Its streamlined, low-profile design with a finished bottom adds a touch of sophistication to your car's interior. The UPPAbaby Aria Base epitomizes adaptability, with its four-position adjustable foot seamlessly accommodating diverse car seat angles. The UPPAbaby Aria Base delivers a flawless integration of safety, convenience, and style for a refined experience on every journey.Features: -Aria incorporates advanced safety features like the load leg and anti-rebound + panel, consumers can feel good in their decision to not only opt for a lightweight seat but also prioritize safety -Ease of Install – SmartSecure System with red-to-green visual indicator, installs in seconds -Load leg for increased safety & reduction in head/neck injury -Anti-Rebound+ Panel for increased safety in rebound & rear-impact collisions -SMARTSecure® System installs in seconds. Red-to-green tightness indicator