Make it a double with the double-walled, 10oz Rocks Tumbler. Keeps your drink cool for up to 5 hours and hot for up to 3 hours, thanks to the vacuum-insulated, 18/8 stainless steel construction. You gotta feel it to believe it with our full powder coat finish, durable enough to go from backyard deck to dishwasher. The tri-mode lid slides open to suit your sip and is spill-resistant when closed. A non-slip silicone base seals the deal and grips surfaces to avoid scratches and accidents. Free of BPA, BPS, and BPF.