giotto 32oz large leakproof bpa free drinking water bottle with time marker & straw to ensure you drink enough water throughout the day for fitness and outdoor enthusiasts-gray giotto drinking the recommended quantity of water a day can be a chore, but with this innovative time marker 32oz bottle, you can drink the reference amount of water your body needs. the time marker helps track water consumption, which in-turn, keeps the body hydrated, revitalizes your hair, skin and nails, and boosts your metabolism.