... to use;Foldable backrest, more convenient to carry after folded; summer/winter new backrest cushion, better ... force, followed by yellow, and green weakest; after backrest reclined, force of hip and caudal are ... in wheelchair, then put down the footrest.Notes after seated in wheelchair:1. Fasten your seat belts ... then it can shorten battery life; charging timely after use in order to ensure the battery life ...