Thermos' Hydration Bottle helps you stay hydrated. It's a 24-ounce bottle with a rotating meter built into the lid, which helps you track your daily intake of water. The body is ergominically designed for a comfortable grip. The push button lid locks to keep water off your valuables, but opens quickly so you can drink any time. Use the carry loop to attach to a carabiner, or slide into a backpack pocket.