Shark & Skinzz Reusable Folding Drinkware Bottle Bpa-free Holds 20 Fl Oz, Collapsible - Stands upright when filled. Flexible, foldable, freezable, and empties completely flat Holds 20 fluid oz of your favorite non-carbonated beverage No metal parts - Sold as set of 3 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