Promotional Tumblers & Travel Mugs, Maddox 20 oz Stainless Steel Vacuum Insulated Tumbler - Copper Plated, Get your hands on the coolest and hottest tumbler around! 20 oz. copper plated vacuum insulated 18/8 stainless steel tumbler travel mug keeps your drink icy cold or super hot all day or night. Narrow and tall design fits most cup holders. Clear slide lock lid guards against spills and splashes. Hand wash only. ... #SSTB020 $11.50/each.