This 3 1/8″ x 8 1/2″ tumbler is made of double wall insuated stainless steel with a copper lining, a tapered and easy to grip diamond-patterened base and secure snap-tight lid with a flip top drink-through lid. Great for hot or cold beverages. Choose from five bright colors and add your school, sports team, company or organizational logo, emblem or message for a energetic branded item that makes a great gift ir giveaway at grand openings, product launches, trade shows, seminars and other social or business events and activities.