Collapsible-Stands upright when filled. Flexible, foldable, freezable, and empties completely flat. 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. Holds 20 fluid ounce of your favorite non-carbonated beverage. Comes with convenient carabineer clip-reinforced with plastic grommet. No-lose cap.