Features: Material: Made from 600D * 900D oxford fabric, durable, water-resistant, and wear-resistant. The quick-release buckles are durable. Padding with the sponge on straps and the back for breathability and helps absorb impact in a crash. Keep Hydration Bladder: Fit for 2L / 2.5L / 3L hydration bladders. The water tube can be fitted on the shoulder straps so it is convenient to drink water no matter when and where. Large Capacity MOLLE System: Besides carrying water, it can also carry the items you need for outdoor activities. Multiple pockets can organize your items. MOLLE system is designed for convenient combination with other equipment, maximizing carrying capacity. Adjustable: The adjustable shoulder belts and lower belt make sure it doesn\'t bounce when you move, balance your body, and reduce the pressure of the back. Occasions: Suitable for traveling, climbing, hiking, camping, and different kinds of outdoor activities.