Multi-Purpose Hydration Backpack Vest Color: Black Material: Nylon Sport: Running Item Weight: 0.17 Kilograms Note: The water bag style will be sent randomly; the picture is for reference only. Note: The water bag style will be sent randomly; the picture is for reference only. Note: The water bag style will be sent randomly; the picture is for reference only. Note: The water bag style will be sent randomly; the picture is for reference only. 【Ultra Lightweight Running Vest】 Weighs only 170g/0.37lbs. High quality and ultra lightweight quick-drying nylon material make this hydration pack more comfortable. The running backpack with wide shoulder straps design distribute weight effectively, and provide you with the max support and min burden. 【Plenty of Storage】 Multi-pocket hydration backpack provides you with plenty of space to store your belongings. Your 500ml soft flasks, phone, key, money, food can be easily stored in the front pocket, and the 2L hydration bladder, towels, clothes or other items can be placed in the back pocket. Both the main zipper pocket and the front zipper pocket are made of waterproof fabric to ensure your clothes and phone stay dry. 【Details】 Extended adjustable chest and waist straps allow the running vest to fit most men and women.Reflective trim and whistle design for safety. The front pocket with a drawstring tightening system to prevent soft flasks sloshing, bouncing, or rattling during your run. 【Multi-purpose Reflective Hydration Backpack】 The hiking backpack with water bladder is suitable for hiking, running, MTB cycling, road cycling, climbing, music carnival, marathon race, and other occasions. This hydration pack is specially designed for outdoor sports, it does not move around or bounce, a perfect gift for friends and family who enjoy outdoor sports.