This 3-in-1 multi-functional drink holder can be used as a tumbler, can or bottle cooler. Fits most 16 oz. tallboys, soda cans, bottles and energy drinks. Just remove the black ring, place your can or bottle inside and secure with the easy to screw-on black ring or pour your beverage in and snap on the lid for a ready-to-go tumbler.Made from high-quality, food grade 18/8 stainless steel. BPA free (of course) with no staining or corroding.