JEELAD'S TPU Hydration Bladder MATERIALS -- High Quality TPU, ultralight taste-free, minimalist reservoir SPECIFICATION -- 1.5L/50oz, 2L/68oz, 3L/100oz The TPU Hydration Bladder is a soft, collapsible water storage solution designed for outdoor enthusiasts, athletes, and anyone in need of a portable and durable water container. Made from high-quality Thermoplastic Polyurethane (TPU), this bladder offers a flexible, lightweight, and ultra-durable means of carrying water during activities. The order of use of outdoor sports water bags The first step is to open the water bag and fill it with water The second step is to seal the water injection port, the water injection port is perfectly locked, so that the water cannot leak out The third step is to install the straw Finally completed the water filling and installation of the water bag. Better quality straws to escort your outdoor sports. Easy to Drink Mouthpieces Hydration reservoir can pull up on the drinking cap, soft silicone mouthpiece makes the water flow fast. The handle is pulled open to fill the water quickly, easy to clean The bag body is made of TPU and does not contain BPA. Food grade material, absolutely safe and reliable, no smell. Recommended temperature: -20℃~50℃ Ideal for use in various settings, including hiking, camping, cycling, running, and everyday use.