This shape-shifting 16 ounce cup in Ink black holds a perfect pint of liquid when it's expanded and full! Perfect for smoothies, beer, coffee or whatever your favorite hot or cold beverage may be. Includes a straw for splash-proof sipping. Stylish, earth conscious and sustainable design brings more to life than what it takes away from our natural resources. When empty, it collapses into a little compact disc, that can be stuffed in a bag for transport. The screw-on cap with tab creates an airtight, leak-proof seal for hydrating on-the-go. The cup, tab and straw are made from LFGB Certified (stricter than the FDA guidelines) food-grade silicone with a polypropylene cap; BPA-free, no phthalates, leads or glues. It also comes apart for easy cleaning and it's dishwasher safe! Diameter is 4 inches, it's 5.5 inches tall when expanded and 2 inches tall when collapsed, fits standard cupholders. Weighs 7 ounces when empty.