Promotional Tumblers & Travel Mugs, Stormy 20 oz Double Wall Stainless Steel Tumbler - Vacuum Insulated & Temperature Control, The Stormy 20 oz 18/8 stainless steel double wall tumbler is perfect for all seasons. Its vacuum seal will keep your favorite chai hot for 10 hours and your favorite energy drink cold for 18 hours. This tumbler fits in most car cup holders and its spill-proof slide closure lid will keep your drink safe. FDA compliant and BPA Free. ... #KM8404 $15.27/each.