The frost bottle is ideal for storing 600ml of water, ice tea, juice or a sport drink. The impact-resistant double wall Tritan with stand sub freezing to boiling temperatures. The Bottle has a re-freezable built-in gel back that eliminates the need for ice as the technology keep drinks ice cold for hour without the watered down effort of ice. The bite it silicon sport lid and straw make drinking a breeze. bottle is BPA free and food safe.