- Ergonomic and comfortable: Dimensions L 28 cm / 11.02 in, W 6 cm / 2.36 in, H 40 cm / 15.74 in. Made of scratch-resistant, water-repellent nylon. Adjustable chest and waist belt system with breathable back padding keeps the MTB bicycle backpack close to the body, comfortable and non-slip during rides. - Perfect fit for movement: Ergonomically designed to adapt to the double S shape of the spine. Chest strap and waist belt secure the pack to the body when riding, helping it stay in place on curves. - Hydration ready: Concealed H2O outlet on the shoulder strap for a hydration bladder. Drink water anytime even while riding. Can be used as a hydration bag, suitable for a 2 litre water container, with a special hole design for the water bag (2 L drinking bag not included). - Lightweight and close-fitting: Weighs only 330 g. The double U-shaped smooth design keeps the backpack close to your back for a wide range of body shapes, allowing acrobatic cycling movements while maintaining contact. - Use scenarios: - Daily urban commuting and light trail riding with essentials and water easily accessible. - Mountain biking on longer rides that require hands-free hydration and secure fit. - Short bike trips or errands where compact storage and close-to-back positioning are preferred.