Custom Tumblers & Travel Mugs, 20 oz White Double-Walled Stainless Steel Tumbler w/ Leakproof Lid Slide Closure - Vacuum Insulated, 20 oz double-walled stainless steel vacuum tumbler with stainless steel liner for vacuum isolation. Shiny and matte colors will keep drinks hot for 8 hours and cold for 12. Leakproof top with slide closure. ... #IMC-TM9987W $11.62/each.