Stojo silicone collapsible water bottle shape-shifting wonder holds a whopping 20 oz of liquid when full, and collapses into a polite sphere when empty. Save even more space by attaching it to your bag strap, and show off how efficient you are. It's your new water bottle without the bulk. Collapsible, carryable, convenient: To collapse, simply unscrew the cap, close your Stojo like an accordion, and re-screw for a leak-proof seal.