The bag mouth personalized drawstring design, strong and durable, soft and moderate, can be well locked inside the bag, safe and convenient. Adjustable shoulder strap, convenient and practical, hardware polished many times, sturdy and durable. Reasonable design of inner and outer pockets, practical large capacity, convenient and beautiful. Lightweight fabric, waterproof, sturdy and durable. Built-in a wet and dry separation inner pocket. Suitable for many places: basketball, football, cycling, sports, swimming, fitness, yoga, youth training and so on.