Totally Convenient: Multiple pockets for storage and organization, theres a roomy main compartment that lets you easily carry water. Additional interior pockets are for smartphones, pencil pockets, etc., and exterior zippered pockets can store small accessories such as keys. High Quality Material: Made of ripstop and ultra lightweight designed to keep you cool and dry during your ride. Very attractive, comfortable and durable. Adjustable shoulder straps: bearing system with breathable material, adjustable padded shoulder straps for comfort, chest straps and belt to meet your needs. Cycling/Skiing Design: The mini cycling backpack features an ergonomic rear design for improved breathability and maximum comfort. The back has a built-in breathable mesh cushion, which is breathable and not tight. Reflective strips for safe driving at night. Essential equipment for outdoor sports: lightweight, suitable for outdoor activities such as mountaineering, camping, climbing, walking, hiking. cycling, mountaineering, trekking, etc.