Thermos Vacuum Insulated Stainless Steel Hydration Bottle, Stainless Steel - 18 oz The Thermos brand 18 oz vacuum insulated stainless steel hydration bottle features THERMOS vacuum insulation technology for maximum temperature retention to keep drinks refreshingly cold for up to 12 hours. The bottle is made durable stainless steel interior and exterior. A comfortable silicone grip and sweat-proof design means the bottle won't slip from your grasp and it won't leave water rings on surfaces. A hygienic push-button sipper lid has a locking ring to prevent spills. Ideal for water, iced tea, juices, or sports drinks, this bottle will hold up to 18 ounces (530 ml). Fits most automobile cup holders. BPA-free. Dimensions: 2.8″ x 2.9″ x 10″.