Swig's Combo Coolers can be used three ways: Use the slide-closure lid to turn it into a cup, or secure any can or bottle with the twist-on holder to keep your drinks cold! Swig Vacuum Insulated tumblers will keep beverages, cans or bottles ice cold while enjoying the game with friends or at the beach on a hot sunny day. Cold up to 12 hours and hot up to 9. 304 Grade - 18/8 Stainless Steel BPA Free, Twist-On Slide-Closure Lid and Plastic Grey Holder. Sweat Free- perfect for vinyling and engraving. Holds 12oz.