Convenient with helmet storage, perfect for cycling! Color: Mint Green 【Excellent Material】Made of high-quality nylon and polyester, it boasts excellent durability. Features a special hole design for a water bladder (not included). The straw clip on the shoulder strap can secure the water tube for easy use. It also has a water-repellent finish, protecting the contents of the bag even in sudden light rain. 【Ergonomic Design】Ergonomically designed shoulder straps and functional storage support active scenes! High-performance mesh material is used, and the back employs a multi-layered honeycomb urethane pad for high breathability, efficiently dissipating heat, preventing stuffiness on the back, and providing comfort. At the same time, it reduces pressure on the shoulders and cervical spine. 【Multi-functional】The bottom of the bag is equipped with a helmet holder that can secure a helmet to the bag. It's built-in, so you can take it out only when needed and store it compactly when not needed. There are net pockets on both sides with locks, allowing you to store water bottles. You can hydrate while keeping both hands free, enabling safe and comfortable activities. 【Easy to move with the right capacity】With an ultra-lightweight and compact design, it's the perfect design for people who exercise. Enjoy sports with minimal luggage when exercising, such as with a T-shirt, towel, water bottle, and wallet! It's great for various outdoor scenes, including trekking, camping, outdoor festivals, cycling, fishing, and winter sports. 【Night Safety Design】The fluorescent parts design attracts the attention of other road users and protects riders from danger. Safe for night running, mountain climbing, and cycling! 【Product Specifications】 Material: Nylon and Polyester Colors: Mint Green, Black, Gray Size: Approximately 45 * 15 * 25cm Weight: Approximately 400g Helmet Storage Running Cycling Hydration Backpack