Under Armour Double Wall 18 Ounce Water Bottle;

The Under Armour hydration bottle line from Thermos was built with the active athlete in mind. Athletes need to perform their best, and that starts with proper hydration. The Under Armour Double Wall 18-ounce hydration bottle is made from BPA-free, impact-resistant and dishwasher-durable Eastman Tritan copolyester material. The push button lid is easy to operate with one hand and includes a locking ring to keep the lid secure during transport. The double wall insulation keeps the exterior sweat proof.