This hydration backpack is lightweight and water-resistant. It features multiple pockets to keep your gears organized, and the thermal insulated compartment can keep your fluids cool for hours. The backpack is a perfect choice for camping, cycling, climbing, hiking, running, and other outdoor activities. Features: Made from quality nylon fabric, lightweight, water-resistant and abrasion-resistant. Bladder compartment with thermal insulation keeps your drinks cool for hours. (Bladder is not included) Zippered front pocket, two mesh side pocket and adjustable cord provide more storage space and help sort your accessories. Breathable mesh shoulder straps and back keep you cool and comfortable. Adjustable shoulder/chest/waist straps for perfect fit, suitable for men and women. Reflective strips for added visibility and safety at night. Suitable for camping, cycling, climbing, hiking, running, and other outdoor activities. Specifications: Material: Nylon Color: Black / Blue / Green / Grey / Lake Blue / Orange / Purple (optional) Dimension: 23 * 10 * 43cm / 9 * 3.9 * 16.9in Weight: 0.36kg / 12.7oz Package List: 1 * Hydration Backpack