The base includes a leg load that can be adjusted 10 different positions and has an Energy Management Foot that absorbs energy by crumpling upon impact. Built-in anti-rebound bar attached to base provides superior protection in case of collision. Base is equipped with an innovative system which easily and securely locks the base in place for added stability with either LATCH strap or vehicle's seat belt. Turning knob can adjust the recline in infinite position, while the indicator allows you to precisely find the proper seat angle to follow your child's growth.