The Official Party Cup Grunt Style partnered up with another badass company, WYLD Gear® to bring you this rigorously tested 16 oz Stainless Steel Party Cup, aka The Official Party Cup! This Insulated Stainless Steel Party Cup will keep your beverage ice cold for hours. No Party Fouls here either with the Leakproof Lid and rubber base. This cup will be the buzz at your next social gathering. This tumbler is truly the highest in drinkware construction. Also available in 24 oz. Grunt Style's 16oz Stainless Steel Party Cup is crafted with the following details: The Official Party Cup Triple Wall Copper-Dipped Insulated Stainless Steel Dual-wall kitchen grade 18/8 stainless steel and inner wall is dipped in copper Vacuum Sealed WyldSlyder Leakproof Lid No-Slip Grip Rubber Base