Klean Kanteen Double Wall Vacuum Insulated Stainless Steel Tumbler Cup with Tumbler Lid Double Wall Vacuum Insulation, Keeps Hot up to 4 Hours, Keeps Iced up to 20 Hours Food Grade 18/8 Stainless Steel Construction Comes with Tumbler Lid, Size:6.2 inch H x 3.5 inch W Large 3.08 inch (78 millimeter) opening fits ice, easy to drink from; Compatible with all Klean Kanteen Pint and Tumbler lids Backed by the Klean Kanteen Strong as Steel Guarantee