Made Of TPC | Screw On, Spill-Resistant Lid  | Wide Mouth Opening   | Designed To Reduce Single-Use Plastics  | Lightweight  | Compact And Portable Storage Technology Enables You To Fold Bottle Into Itself | Ultimate Space-Saving Hydration Solution | Collapses To Less Than Half Its Size For Easy Storage | Features Strap That Doubles As An Easy Carry Handle When Bottle Is Expanded And A Strap To Keep Bottle Compact When Collapsed  | Perfect For Travel, Hiking Or Commuting | Meets FDA Requirements  | BPA Free | Hand Wash Recommended | US Design Patent No. D1,011,197 S