Contigo Thermo Ceramic 10-Ounce Desk Mug, White Insulated stainless steel outer wall creates added durability and helps retain beverage temperatures for one hour when used with lid Smart sip lid with spout allows you to drink from ceramic and helps to retain beverage temperatures Grip base avoids clanking and chipping and adds stability on a tabletop Patented design combines ceramic and insulated stainless steel for both performance and style Made from BPA-free material