Stojo Collapsible Bottle, the 20 ounce shape shifting wonder. Holds a whopping 20 ounces of liquid when full and collapses into a polite sphere when empty! Tethered, screw-on cap creates a loop handle and creates an airtight, leak-proof seal. Collapses to 3.3" high when not in use. Silicone bottle and polypropylene cap, BPA-Free. Dishwasher safe - comes apart for easy cleaning.