Thermos 26-ounce hydration bottle is made with Thermax double wall vacuum insulation for maximum temperature retention and is BPA free. This technology was designed to keep drinks refreshingly cold for up to 12 hours. Made with unbreakable stainless steel interior and exterior, with a sweat-proof design: it wont leave water rings. Twist off lid protects spout from dirt and germs: ideal for water, iced tea, juices or sports drinks. Capacity:26-ounce/770ml