Hot Product: Sport Bottles from HumphreyLine
People should drink eight 8 oz. glasses of water a day, which is 64 oz. of water, which is 64 oz. more than most people drink in a day. To help keep track, HumphreyLine's Sport Bottles measure up to 16 oz. so you can see how much water you're drinking. Just in case you weren't sure how to subtract by zero.