480ml (16.2oz) is the perfect size for carrying daily. It fits nicely in your hand and in most cup holders. For easy drinking, ice cube compatibility and allows for the bottle(s) to be placed in the dishwasher for easy and convenient cleaning. Made from pure borosilicate glass, PC and BPA free silicon seal to ensure water never touches any surface that will leach chemicals into your water. It is avaiable to print logo, perfect as promotional gifts.