Description: 【Quality and Water Resistant】: Made from wear resistant, splashproof oxford cloth material, this backpack is designed to withstand many weather conditions, allowing you to travel freely without fear of rain or wind 【Large Capacity】: The backpack has a large main compartment and multiple storage pockets for organized storage of various items. It has an 8L capacity for the backpack 【With 3L Hydration Bladder】: The backpack accommodates a hands free quick drinking water bladder that allows you to hydrate at any time, making it suitable for various outdoor activities 【Comfortable and Breathable】: The comfortable breathable back carrying system features a breathable mesh fabric on the back to prevent stuffiness during exercise, keeping you cool at all times 【Multiple Usage】: Our hydration backpack 3l bladder is your good choice for cycling, camping, running, hiking, music carnival, commuting. This versatile backpack has all the gear you need on the go Specification: Material: Oxford Cloth  Size Chart: 46cmx17cmx7cm/18.11inchx6.69inchx2.76inch Package Includes: 1 Set Hydration Backpack Note: Please allow slightly errors 1-2cm differences due to manual measurement.