1. Opening for Easy Cleaning and Filling: Our hydration bladder has one of the largest openings; Great openness allows easy shedding of water; In addition, easily access to the internal water bladder is quite wide for a hand or bottle brush; 4 'It opens and closes on the lid; for cold water, add a direct scoop or ice cubes from the ice distribution of the refrigerator; the hydration package water reservoir encourages smooth intravenous and is easy to clean. Pressure sealing side technique, peakyte Hidred: This 1.5L water reservoir -20 to 50 degrees to 50 degrees can be withstanding; While moisturizing 4. Bite the mouthpiece only to absorb water; easily accessible/soft mouthpiece with closed valve; It also has a lid to keep dirt outside; Bite easily check the water flow; The rapid release tube can be removed; When removing the tube, the connector automatically closes and the hydration bladder is filled; Keep it properly on the refrigerator/Icebox without a hose hose