TAP the easy bottle - World's first antibacterial collapsible water bottle - Designed to keep your body and the nature healthy Antibacterial - We used antibacterial masterbatch for body and cap which granted USA，Korea，China patent and FDA-approved. Size & volume : 125 x 240mm (4.9' x 9.4') when flat， 500ml (16.9oz). Pocket-carry size when folded. Semi-permanent durability : By the technology of Dongbang industries and 3-ply LLDPE+Nylon complex structure， you can even step & stand on the bottle with water filled. Extra cap and carabiner included - 1 each per 1 bottle. Freezable and hot water good to go - no matter what kind of weather you can be with this bottle for the hydration of your body.