Lightweight & Waterproof: Comfort for both outdoor adventures and city walks! This multi-functional backpack is perfect for a wide range of activities, including marathons, hiking, cycling, and commuting by bike. Made with waterproof nylon and polyester, it reliably protects your belongings from sudden rain and sweat. Weighing in at only about 140g, it's ultra-lightweight, reducing strain and providing comfort even when worn for extended periods. The design fits the body snugly, minimizing swaying and allowing for smooth movement during active pursuits. It's also designed for everyday use. —-Product Description---- 【Color】Blue 【Size】Approximately 37 x 20 x 7cm (Free Size) 【Material】Waterproof Nylon/Polyester 【Weight】Approximately 140g Material: Nylon Condition: No stains or tears