CERTIFIED TPU MATERIAL: Jokumi water bag is made of eco-friendly TPU materials that are 100% BPA & BPS free. The soft mouthpiece of the water bag is made of food-grade silica gel, which has no peculiar smell and good abrasion resistance, which protects your health. The excellent TPU material can be used when the outside world is minus 35-70 degrees Celsius. It is your ideal outdoor sports partner. WATER SPOUT & STRONG PRESSURE RESISTANCE: The water bag is made of thick 0.32mm TPU material with a double-layer crimping process design, which provides comprehensive leak protection. It can withstand a weight of 80kg for 15 minutes and passed the pressure resistance test. The unique design with 3 hanging holes makes our water bag suitable for most backpacks. ARTIFICIAL MECHANICS DESIGN & LOW PROFILE DESIGN: The handle on the opening of the water bag has an ergonomic design for a comfortable grip. The threaded cleaning lid makes opening and closing the water bag more convenient and easy. It features a special patented design with a 130 water-soft mouthpiece that makes drinking outdoors easier. MULTIPLE SIZE OPTIONS AND EASY CLEANING: Jokumi water bags have different capacities of 2L and 3L, offering a variety of options. The detachable hose up to 1m makes cleaning easier. The large opening design makes it easier to pour ice, easy to clean and dry, the arc shape effectively avoids cleaning dead corners, and an additional anti-dust design was added to keep the soft mouthpiece clean.