Customized Tumblers & Travel Mugs, Polar 30 Oz Stainless Steel Vacuum Insulated Tumbler - Powder Coated & Spill Guard, 30 oz. powder coated 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. ... #SSTMBLR030 $12.86/each.