【Waterproof Oxford Material】The wheelchair bag is made of high-quality Oxford fabric, which is waterproof and durable and can withstand weight well. The inside of the storage bag is a durable lining that can be machine washed or hand washed. 【Large Capacity】The size of the wheelchair backpack is 47 cm x 40 cm and it can be expanded from approximately 15.2 cm to approximately 20 cm to load items. It is large enough to hold daily necessities such as water bottles, keys, wallets, books, glasses, snacks, blankets, rain gear, electronic devices, etc. 【Reflective Strips for Increased Safety】The wheelchair backpack has a reflective strip (33x2.5 cm) on the top. With the help of pleated reflective material, the driver can see pedestrians within 100 meters in the dark, making your night travel safer. 【Magic Strap, Easy to Close】The wheelchair storage backpack closes with a wide magic strap. Not only can you easily open and close it in seconds, but you also don't have to worry about the zipper breaking. 【Ideal for Wheelchairs/Walkers】Our wheelchair backpack has two retractable straps, which is a perfect choice for organizing and storing daily necessities. Dual-use wheelchairs and walkers, mobility chairs, walkers, and electric wheelchairs are very practical. Very suitable as a gift for your dad/mom/grandpa/grandma/friends etc.