This shape-shifting wonder in Peony pink holds a whopping 20 ounces of liquid when it's expanded and full! 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 sphere, that can be stuffed in a bag for transport. The screw-on cap creates an airtight, leak-proof seal for hydrating on-the-go. The bottle is 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 3.5 inches, it's 7.1 inches tall when expanded and 3.3 inches tall when collapsed. Weighs 6 ounces when empty.