Enjoy the beautiful hues of Corkcicle's Classic Collection. These 24-ounce tumblers are crafted from stainless steel with proprietary triple insulation, providing superior insulation and keeping cold drinks chilled for over 9 hours (more for iced drinks) or hot for 3 hours. All Corkcicle tumblers feature slip-proof silicone bottoms, easy grip sides, and sliding, spill-resistant lids.