The MEGA Backrest Bag J840 has a massive storage space that can carry just about anything! The main compartment includes a full-size zippered loading opening located at the top - large enough to carry your groceries, laundry, or personal items. Additionally, it comes with two easy-access side mesh pouches perfect for maps, newspapers or large bottles. The Mega Bag attaches with two velcro adjustable straps, to the backrest of your scooter or power chair, with minimal effort allowing you to install and remove the bag very quickly. The Mega Bag is made from durable water resistant material. The Mega Backrest Bag is specifically engineered to work with most scooters and power chairs in the USA market today. Please note dimensions, does not fit all seats.