Healthy and Safe Food Grade Materials: The collapsible water bottle is made of high quality food grade safety silicone material, environmentally and biodegradable material, non-toxic and tasteless, no BPA and other harmful substances. The bottle endures a wide range of temperatures from -40 to 230, for hot and cold drinks. Safe for your daily water drinking. Large-capacity & Lightweight: The collapsible water bottle has a 2L/64oz, large capacity can meet your daily drinking needs. The biggest feature is that you can fold it after drinking, can be folded to less than 1/3 of its original volume and save up to 50% space, can easily put it into your bag. Time and Water Level Mark: Our sports bottle is printed with a clear water measurement mark and a time markers on the side, to remind you to replenish water reasonably. It is a good assistant for you to keep your healthy. Leak-Proof & Durable: The sport bottle built-in silicone gasket and snap-on spout design won't leak when inverted. The first-grade silicone material has better flexibility than glass and plastic bottle, so you don't have to worry about breaking and water leakage. More Detailed Design: The 2L large sport water bottle comes with a detachable, reusable straw, you can choose to keep or remove the straw according to the way you like to drink. In addition, the wide mouth design makes leak proof drink water bottles easier to clean the interior, and allows you to add more water, ice and lemon or whatever you need. Best Choice for Going Out: Our collapsible water bottle can be easily packed in your bag or hold in hand with water bottle handle or hang up with strap, to take with everywhere you go. Perfect for travel, gym, cycling, running, camping, fishing, hiking, beach, offices and any workout outdoor activities.