Omgogo Coffee Mugs Vacuum Mugs  Hidden Hand Ring Design  Insulation Stainless Steel Portable Mug 16Oz (Gray) Stainless steel thermos keeps beverages hot or cold for hours Thermos durable and sanitary 18/8 stainless steel interior Thermos bottle Wide mouth accommodates full size ice cubes Compact design takes up minimal space while maximizing capacity for travel Thermos Lid is made out of BPA free plastic