1. High-density splash-proof fabric, free from wind and rain, free to travel, splash-proof, soft, odorless and scratch-resistant. 2. Multi-partition storage space and external multi-functional storage bag design meet the needs of riding, which is convenient and practical; Contain the water bag to replenish water at any time, release the quick drinking system with both hands and replenish water at any time, which is suitable for all kinds of outdoor activities (the water bag needs to be purchased separately and is not included in the product). 3. Comfortable and breathable backpack system, breathable mesh cloth on the back, no sultry feeling during exercise, always comfortable, thickened breathable shoulder strap, shoulder strap with breathable mesh fabric thickening design, effectively relieving shoulder pressure and making it easier to carry. 4. Reflective strips at night, including multiple reflective strips at night, making it safer to travel and run at night. 5.Our hydration backpack is the perfect choice for cycling, camping, running, hiking, music carnival, commuting and school. This multifunctional backpack has all the equipment you need on the trip. 1. High-density splash-proof fabric, free from wind and rain, free to travel, splash-proof, soft, odorless and scratch-resistant. 2. Multi-partition storage space and external multi-functional storage bag design meet the needs of riding, which is convenient and practical; Contain the water bag to replenish water at any time, release the quick drinking system with both hands and replenish water at any time, which is suitable for all kinds of outdoor activities (the water bag needs to be purchased separately and is not included in the product). 3. Comfortable and breathable backpack system, breathable mesh cloth on the back, no sultry feeling during exercise, always comfortable, thickened breathable shoulder strap, shoulder strap with breathable mesh fabric thickening design, effectively relieving shoulder pressure and making it easier to carry. 4. Reflective strips at night, including multiple reflective strips at night, making it safer to travel and run at night. 5.Our hydration backpack is the perfect choice for cycling, camping, running, hiking, music carnival, commuting and school. This multifunctional backpack has all the equipment you need on the trip.