1. Water-splashing-proof nylon fabric is made of lightweight nylon material, which is light, soft, tear-resistant, wear-resistant, waterproof, greatly improved in quality, light and unburdened, made of lightweight fabric, which reduces its own gravity and makes outdoor mountaineering easy and stress-free.2. Comfortable and breathable backpack, the back and shoulder straps are made of mesh breathable material, which effectively ventilates and perspires, making it easier to carry. The first layer of 3D air-guide pearl cotton backboard: mesh cloth surface ensures breathability, the second layer: sponge layer plays a role of slow release, and the third layer: foam layer has a decompression and shock-absorbing effect, and the padded breathable waist protection design fits the back and is easy to carry.3. The internal water bag can release the quick outdoor drinking system with both hands to replenish water at any time, which is suitable for all kinds of outdoor activities. When the water outlet of the shoulder strap moves, it can replenish water at any time (the water bag is not included in this bag, so it needs to be purchased separately).4. Large-capacity space, the main bag is designed with practical large space, which is convenient for carrying all kinds of outdoor products and easy to travel Portable helmet fixing buckle, front practical buckle design, can fix the helmet, more powerful.5. Reflective warning strip, with high brightness, can be seen by others when traveling at night, which is safer. The reflective strip can reflect the surrounding light at night, thus playing a warning role for passers-by and drivers. The reflective strip safety equipment increases the safety of the majority of donkey friends at night. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.