Integrated Carabiner: The Vapur foldable bottle has an integrated carabiner on the cap so you can easily clip to your active gear. Ideal for travel, hiking, running, concerts and outdoor adventures Spill-Proof Convenience: Vapur's collapsible bottle cap has a tough seal with rubber stopper for a leak proof closure & a flip open spout for easy hydrating. Stands when full, folds small when empty Lightweight Wide Mouth Design: The Vapur bottle is designed with a wide mouth opening making it easy to fill and is lightweight - weighing under 2 ounces when empty. The perfect travel companion! Dishwasher Safe and BPA-Free Bottle: Vapur's foldable water bottle is easy to clean and dishwasher safe. The bottle is made with BPA, BPS, and Phthalate-Free materials Durable: The Vapur bottle is built with three layers of ultra durable plastic. The first layer is made from FDA approved polyethylene and two layers of nylon for strength and durability