Another of our popular large-capacity water bottles, the Dual Wave offers a large scale 64 oz capacity to help you hit your hydration goals. Made of sturdy plastic, the bottles features a curved, comfortable-to-hold wavy silhouette. It also comes with a detachable EZ-Freeze® freezer stick that keeps drinks colder, longer. The flip-up covered sipper cap keeps out dirt and provides a spillproof closure.Spirit Sipper cap.Finger pull on sipper.Dual threaded cap for left and right hand drinking.Comfortable grip on handle.Includes freezer stick.