Features: Large Capacity: This backpack offers ample space to accommodate a 2L water bladder (not included) and other essentials, making it perfect for long rides or outdoor adventures. Premium Quality: Made from high-quality waterproof nylon fabric, it has nice durability, resistant to stains, and tear-resistant, ensuring it can withstand the demands of outdoor use. Ergonomic Design: It features an ergonomic carrying system that reduces pressure and provides a comfortable fit. The breathable mesh fabric on the back prevents heat buildup, keeping you cool and comfortable during your activities. Detachable Storage Bag: Equipped with a detachable small storage bag, it allows you to conveniently store your phone, keys, wallet, and other small items. The reflective strips enhance visibility, ensuring your safety while cycling. Lightweight and Versatile: Designed with a focusing on lightweight functionality, the backpack is perfect for riding, cycling, hiking, running, etc. It allows you to carry your essentials without feeling weighed down or restricted. Specifications: Color: Black/Orange/Yellow-Green(optional) Material: Nylon Fabric Item Size: 380 * 300 * 50mm/ 15.0 * 11.8 * 2.0in Item Weight: 450g/ 15.9oz Package Size: 400 * 350 * 50mm/ 15.7 * 13.8 * 2.0in Package Weight: 550g/ 19.4oz Packing List: 1 * Cycling Backpack