Zojirushi SM-KHE48AG Stainless Steel Mug, 16-Ounce, Smoky Blue - 2 Pack Set of 2 Stainless steel vacuum insulation keeps beverages hot or cold for hours Durable and sanitary 18/8 stainless steel interior - Slick steel finish Wide mouth accommodates full size ice cubes Compact design takes up minimal space while maximizing capacity