Material: The soft water bottle is made of eco-friendly TPU material, the spout is made of silicone material, PVC and BPA free, no plastic smell, easy to clean in the dishwasher. Space saving : The collapsible water bottle stands upright when full and fully folds into a small size (about 6cm high) when empty, which can fit in your pocket and make your run easier. Use: The spout is made of silicone material, when you drink water, you just need to nibble the front groove to get the water out, no need to take off the running backpack or stop running. Easy to carry: The ultra-light collapsible running water bottle is easy to carry, whether empty or full, it is ideal for running hydration vest and hydration belt.Multifunctional: The Soft Flask water bottle is specially designed for outdoor sports and daily use, ideal for hydration, marathon, jogging, running, hiking, cycling, mountaineering, hiking, etc. Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.