Huge Capacity 15L Anti-tear Polyester Sports Backpack Bags (Storage Clothing,Water Bag,Cycling Helmet Perfect) For Camping Bike Travel Hiking 5 Colors Special hole design for water bag(NOT included). Compact size, safe and convenient to use. The backside has extra padding for maximum support and comfort. Suitable for outdoor activities like cycling, rock-climbing and hiking, etc. Padded, adjustable, removable shoulder strap.