This shape-shifting wonder holds a whopping 590ml of liquid when full, and collapses into a polite sphere (8.3cm tall) when empty. Save even more space by attaching it to your bag strap, and show off how efficient you are. The Stojo Bottle is ideal for school, work, commuting, backpacking, hiking, and sailing. Screw-on cap creates airtight, leak-proof seal. LFGB Certified silicone bottle. BPA-free, polypropylene cap. No phthalates, leads, or glues.