This tumbler is made by Urban Peak and features a copper-lined inter with vacuum-insulated deep draw liner that maintains optimal drinking temperatures and provides 8X heat retention. A stainless Steel dual-walled construction, lead-free vacuum seal, as a screw-on, spill-proof AS plastic with unique flip top design and Tritan snap locking closure lid. Keeps ice for over 24 hours. Sweat-free design and powder-coated finish.