The Perma-frost hydra bottle is ideal for storing 20 ounces of water, ice tea, juice or a sport drink. The impact-resistant double wall Tritan withstands sub freezing to boiling temperatures. The perma-frost bottle has a re-freezable built-in gel pack that eliminates the need for ice as the technology keeps drinks ice cold for hours without the watered down effect of ice. Just place bottle in the freezer an hour or more prior to use and enjoy cold drinks for hours. The flip top and spout tuck away when not in use and are easy to clean. A carry-on handle allows you to carry with ease. The bite it silicone sport lid and straw make drinking a breeze. Bottle is BPA free and food safe.