✔️【Food Grade Material】Hiking water bottle is made of food-grade silicone, approved to ensure safe drinking, non toxic and odorless. Collapsible water bottle health and environmental protection, anti-corrosion, children can use it with confidence. ✔️【Leak Proof & Easy to Clean】The silicone water bottle is designed with a silicone seal to prevent water leakage. The collapsible water bottle has a wide mouth design for easier cleaning inside.For the first use, it is recommended to soak in boiling water for 20 minutes and clean. ✔️【Cold & Heat Resistance】Sports water bottle have excellent heat resistance and can withstand temperatures from -50 to 200°c. We do not recommend using it in liquids higher than 70°c to avoid hot hands. ✔️【 Suitable for Travel & Sports】Drop resistant, flexible and silicone collapsible water bottle with aluminum alloy carabiner, you can carry it in your hand and hang it on your backpack or sports bag, perfect for travel, gym, outdoor camping, fishing, cycling.