Ships from Hong Kong. These backpack covers are made of nylon and special waterproof coating. Waterproof coefficient is PU5000. Waterproof and high strength, can package your bag well, and also can be prevent your supplies security. The rain cover bag edge is very thick, they are high performance-price ratio items. Wide-range in application. Size (Flat Measurement): 80*100 CM (31.50*39.37 inch) Be suitable for 55 L bag or backpack Have two style, some are diamond surface, some are glossy. Both of them are very beautiful Suitable for a variety of widely used environment. Such as climbing a mountain, tourism, tracing the creek, fishing and cycling A good equipment for outdoor or sports