Product Details Product Details Holds 20oz of liquidDouble wall 18/8 stainless steelCopper lined for maximum temperature efficiencyFood grade – no metallic tasteVacuum insulatedSweat proofBPA FreeImport, Domestic Officially Licensed This Northwestern Wildcats Stainless Steel Tumbler is great for keeping your drink cold and showing your team spirit. This Stainless Steel Tumbler features a stainless steel premium vacuum insulation with a sweat-free outside powder coating.