A collaboration with Rifle Paper Co. decorates Corkcicle's classic 16 ounce Tumblers with three pretty florals for a vibrant collection. Crafted from stainless steel with proprietary triple insulation, the tumblers provide superior insulation, keeping cold drinks chilled for over 9 hours (more for iced drinks) or hot for 3 hours. All pieces have slip-proof silicone bottoms and easy grip sides and a crystal clear sliding, spill-resistant lid.