This super lightweight 5L cycling backpack with 2L water bag is specially designed for bicycle lovers and walkers. With ergonomic design, this backpack give you more comfortable feeling. And made of high-quality and safe material, it is durable for long-time use. It will surely contribute to your fantastic outdoor experience. Features: Made from tear resistant nylon fabric for extreme light weight and durability. Padded mesh back and shoulder strap for maximum breathability and comfort. Fully adjustable shoulder and chest for a custom fit. Comes with a 2L water bladder to keep you hydrated and refreshed all day long. The water bladder is made from food grade material, BPA free and odor proof, can rest assured use. Wide mouth design is easy to fill and convenient to clean. Perfect choice for running, cycling, mountaineering, hiking, fishing, cross-country and other outdoor activities. Specifications: Material: Nylon + PEVA Color: Orange / Green / Blue ( optional ) Capacity: 5L Backpack + 2L Water Bladder Bag Size: 33 * 47 cm / 13 * 18.5 in Package Size: 26 * 20 * 8 cm / 10.2 * 7.9 * 3.1 in Package Weight: 310 g / 10.9 oz Package List: 1 * 5L Cycling Backpack 1 * 2L Water Bag