[Food-Grade Safety Standard] The collapsible water bottle is made of food-grade silicone (bottle body) and pp (bottle cap) materials. Our materials have passed the US Food 
Safety Certification (FDA) free of BPA and other harmful substances. Safety for a wide range of temperatures: -104°F to 392°F. In order to avoid burning, we recommend you don't use the bottle for liquid temperatures higher than 140°F.

Space-Saving Portability] This foldable water bottle is very lightweight and easy to carry.