Large Capacity: Dimension of this bag: 14 x 5.8 x 6.2 inch ( L x W x H). 1 main compartment has 7L capacity to keep your food, drink or some fresh fruits. A small mesh pocket inside can store some small accessories. And one top pocket can store your carry-on items while you're riding, such as your phone, wallet, earphone and so on..Insulated Lining: This rear rack bag is made of waterproof and durable polyester material, effectively prevent rain/water/mud/dust from entering this bag quickly. Insulated inner lining can keep your drink and food cold or warm for hours. And it also can be used to store some fresh fruits, snacks or beverages..Water Bottle Holder Pocket: One side open pocket is designed with elastic band, suitable for different water bottles or umbrellas (up to largest diameter 2.5 inch)..Reflective Strip: Some reflective strips designed on the bag can increase your night visibility, keep your night ride more safety. 2 durable hook-and-loop fastener straps is stable enough to hold this bike bag on the backseat. Make sure it will not move around even though you're riding on a rugged road..Flexible satchel shoulder strap varied from 30.5 to maximum 54.2 inch can be adjusted loose or tight to fit your body. 1 year warranty on each bike bag.