Lightweight and durable: Durable, made of tear-resistant polyester, waterproof and lightweight, high-quality zippers. Breathable and comfortable: This cycling backpack has breathable mesh padding on the back and shoulders for maximum ventilation and heat dissipation. Multifunctional cycling backpack: with a 2-liter hydration bladder. You can carry necessary items during cycling, such as a mini pump, a repair kit, etc.; Adjustable chest and hip straps for a comfortable fit; with an emergency whistle. Sporty and simple design: this ultralight cycling backpack is sporty, dynamic and perfectly adapted to functionality and ergonomics. The large U-shaped zipper handle makes it easy to retrieve your items. Powerful outdoor equipment: the outdoor sports backpack is suitable for cycling, jogging, running and camping. Adjustable shoulder and hip straps for men and women. Suitable as a commuting backpack for daily use and work.