Real mint. Unsweetened. Chill Factor: -4 degrees. Simply cool. Pure. Simple. Mintwater. Metromint is mintwater, pure and simple. The all natural combination of pure water, mint, and lemon essence relieves your thirst, soothes your body, and revives your soul. Take one sip and experience the chill factor: The cooling sensation you can only get with Metromint. The real mint naturally stimulates the nerves, instantly opening your senses to send a fresh, cool feeling throughout your body. No sweeteners. No preservatives. No calories. Water purified by reverse osmosis.