The Nalgene Sustain 24 oz. Tritan On The Fly Water Bottle features a slim shape and fortified cap, making it ideal for care-free storage in work bags, gym bags, backpacks and cup holders. It opens easily for convenient one-hand refreshment on the fly. Made with durable material that is built to last and is dishwasher safe for convenient cleaning. Bottle made in the USA. BPA/BPS Free. Fits most cup holders in cars and at the gym. Easily fits ice cubes. Leak-Proof - Continuous, straight shouldered semi-buttress threads keep the bottle sealed tight.