Enjoy a cup of your favorite beverage at home or on the road in this quality insulated mug. This 4.5" x 4" 12-ounce mug is crafted from 304 and 201 stainless steel with a matte finish powder coating, double-wall vacuum insulation and an AS plastic sip-through lid. It will maintain the temperature of both hot and cold liquids; not for use in freezer or microwave. Choose from five bright colors and add your school, sports team, organizational or company logo, emblem or message to customize.