This 30 Oz. Vacuum Insulated Stainless Steel Tumbler has a Copper Lining to help keep drinks cold for up to 36 hours and hot for an extended amount of time. The Tumbler is made of 18/8 Kitchen Grade Stainless Steel so they are rust & puncture resistant. The Sweat Free design means that hands and surfaces will stay dry. Print 1 Side, 2 Sides or Wrap Imprint (please specify on PO). Don't be fooled by cheaper imitations. Copper Liners help retain temperatures by up to 2 degrees or more per hour!
