The sophisticated shine of Corkcicle's Prosecco Tumbler captivates, just like the bubbly for which it's named. The 16 ounce Tumbler and 12 ounce Stemless Tumbler feature a subtle hue with moody, iridescent highlights that shift under different light.Crafted from stainless steel with proprietary triple insulation, the Corkcicle tumbler keeps drinks cold for over 9 hours (more for iced drinks) or hot for 3 hours. All pieces have slip-proof silicone bottoms, easy grip sides, and a crystal clear sliding, spill-resistant lid. Enjoy your favourite cold or hot beverage anytime, anywhere with Corkcicle!