Feature: 1. Made of premium food grade TPU material.Reusable,BPA-free and safe to use. 2. Soft bite mouthpiece into your mouth and easily drink water flow per sip. 3. A dust cover helps to keep the mouth piece of the water reservoir clean. 4. Leakproof sealing edge makes sure the pressure tolerant and leak proof features. 5. Optimum Temperature is from -20℃ to 50℃,portable to store hot/cold water during outdoors activities. Specification: Flexible TPU constructed,BPA free for safe use during outdoor running, hiking, marathon, Cycle and climbing. Features: Made of premium food grade TPU material.Reusable,BPA-free and safe to use. Soft bite mouthpiece into your mouth and easily drink water flow per sip. A dust cover helps to keep the mouth piece of the water reservoir clean. Leakproof sealing edge makes sure the pressure tolerant and leak proof features. Optimum Temperature is from -20℃ to 50℃,portable to store hot/cold water during outdoors activities. Can be folded into a very small size,and placed in your backpack. Suitable for riding,running,Cycle,camping,hiking,mountaineering,outing or excursions etc. Specification: Capacity: 250ml / 500ml / 300ml / 380ml (optional) 250ml size: 240 * 75 mm / 9.4 * 2.9in 300ml size: 170 * 75 mm / 6.7 * 3.5 in 380ml size: 210 * 75 mm / 8.3 * 3.7 in 500ml size: 255 * 75 mm / 10 * 3.7 in Material: TPU + Silicone + PP Optimum Temperature: -20℃ - 50 ℃ Weight: Approx. 27.7 - 33 g / 1.0 - 1.2 oz Package size: 31 * 12 * 4cm / 22 * 10 * 4cm Package weight: Approx. 30 - 38g / 1.1 - 1.3 oz Package List: 1* Soft Water Bottle 1* Straw Package List: 1* Soft Water Bottle 1* Straw