Lightweight and Durable: Durable, made of tear-resistant polyester, waterproof and lightweight, with high-quality zippers. Breathable and Comfortable: This cycling backpack features breathable mesh padding on the back and shoulders for maximum ventilation and heat dissipation. Multifunctional Cycling Backpack: With a 2-liter water bladder. You can carry essential items such as a mini pump, repair kit, etc. when cycling. 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 belongings. Powerful Outdoor Equipment: This outdoor sports backpack is suitable for cycling, jogging, running, and camping. Adjustable shoulder and hip straps for both men and women. As a commuting backpack, suitable for daily use and work.