Double-Walled Vacuum Insulated Coffee Tumbler: Wetoweto 20oz Coffee Tumbler Mug is with Double-Walled vacuum technology which can keep coffee warm for 6+ hours, beverages cold for 12+ hours.You can enjoy your favorite drink for a long time,it's so great BPA Free and Premium Stainless Steel: Stainless Steel Tumbler Cups are made of Food-Grade 304 18/8 stainless steel and the lid is made of BPA-Free materials. Which is non-toxic and healthy. The interior is electropolished. The outer layer is coated with anti-sweat powder to keep your tumbler dry and clean
