Sharkskinzz Original Disposable Flasks Reusable - Durable, no transfer of taste/odor, easy to clean. Hand wash or top rack dishwasher safe Safe - BPA-free, phthalates-free, and made with FDA approved materials No metal parts Holds 7.5 fluid oz of your favorite non-carbonated beverage Collapsible - Stands upright when filled. Flexible, foldable, freezable, and empties completely flat