Features: 1. Convenient to carry: It is flexible and foldable, which can be carried with you. It is easy to store, light and convenient. This water bottle can be your company during exercise. 2. Environmental protection design: using TPU environmental protection material, the dark blue bottle body projects a white fish-bone light under the sunlight, making you have the desire of drinking water and timely replenishing the body's urgently needed water during exercise, which can make you full of energy. It does not contain bisphenol and is healthy, which is suitable for daily drinking water. Please note that this bottle is a soft water bag, only suitable for cold water. 3. Comfortable and safe: the bottle body has a frosted texture, which makes you feel more comfortable and gives you a natural, warm and cool feeling. 4. Simple operation: water comes out of the silicon mouth, so you just need to bite it when you drink water. 5. The best gift: It is an excellent gift for family, friends, colleagues, especially friends who like a healthy lifestyle and love sports. It is widely used in hiking, fitness, cycling, mountaineering, camping and so on. Specification: Material: TPU Size: 22*6cm/8.58*2.34in (250ml) 25.5*7cm/9.95*2.73in(500ml) Packing List: 1*Soft Water Bag Note: Precautions: 1.Suggested temperature: 0-40 2.Di-sinfection suggestion: Do not steam st-erilize the kettle avoiding deforming. Just wash it with warm water; Do not put it in a st-erilizer for di-sinfection, etc. 3.Due to the lighting effects and shooting angles, there is color difference in the product, please understand. 4.Due to manual measurement, there is a tolerance in the product size.