Car Seat: 5-point safety harness; easy one-hand harness adjustment and push-button release, 4-position push-button height adjustable base with level indicator for proper installation, One-hand easy-access seat release, EPS energy-absorbing foam for superior side impact head Protection, Boot provides extra warmth and comfort, Smooth carrying handle, won't scratch your arm, Soft head support, Flex-Loc® refers to the base's flexible (not rigid) latch straps.