Promotional Tumblers & Travel Mugs, Tamari 12 oz Glass Tumbler & Vacuum Insulated Cooler - 6Hr Insulation, 2-in-1 design allows for use as a 12 oz glass tumbler or 11 oz insulated tumbler Double-wall vacuum insulated stainless steel construction Keeps drinks hot or cold for up to 6 hours Hand wash only ... #DTM-TM23 $14.01/each.