Zojirushi SM-AFE35-XA Stainless Steel Tuff Mug 12 oz. This Tuff Mug is compact and is designed to drink directly out of the bottle. The vacuum insulation provides excellent heat and cold retention and prevents messy outside condensation. It features easy-to-clean nonstick interior, 2-inch wide opening and tight fitted lid to keep contents hotter or colder. Available in two sizes and a variety of colors. For over 80 years the Zojirushi corporation has brought innovative technology to Rice Cookers, Steamers, Thermal Carafes, Air Pots, and Stainless Steel Vacuum Bottles. Products that are perfect for indoor and outdoor activities. For quality products that make life in the kitchen easier, and more efficient, think Zojirushi.