Marchway Tactical Molle Hydration Pack Backpack With 3L Tpu Water, Biking nylon Imported Streamlined and Compact Design: 19.7?x8.7?x2.6? in size. Ergonomically fits for your shoulders chest and waist. 3 straps are all adjustable for reducing bounce. Soft air mesh back speeds up air-flow and makes your back cool. Foam padded shoulder straps are extremely comfortable. Reliable Material: Heavy duty 1000 Denier water repellent nylon with superior wear resistance. Engineering plastic buckle is durable and impact resistant; Military grade webbing is strong, anti fading; SBS brand zipper is reliable and long lasting. Practical Functions: 1 main pocket fits up to 3L water reservoir with either large or small opening. 2 external pockets for storing personal belongings wallet, gadget, towel, phone, keys. The MOLLE system allows you to carry more items. Professional 3L Hydration Bladder: Made of 100% BPA free, tasteless TPU. Quick release valve allows you to refill water without connecting hose. Large opening is easy to clean and add ice cube. 360 degrees rotatable mouthpiece allows for easy drinking. Shut On/Off valve helps to adjust water flow. Middle baffle keeps the bladder flat and makes it easier to place into the backpack. Versatility: Frees your hands while drinking, this tactical hydration pack is your perfect choice for short trip, camping, bike riding, walking, mountaineering, kayaking, skiing, snowboarding. A decent holiday gift for family and friends who love outdoor sports.