Klean Kanteen Single Wall Stainless Steel Cups, Pint Glasses in 10oz/16oz/20oz Durable and High Quality Food Grade 18/8 Stainless Steel Construction Large 3.08 inch (78 millimeter) opening fits ice, easy to drink from; Compatible with all Klean Kanteen Pint and Tumbler lids Easy to clean electropolished interior doesn't retain or impart flavors Dishwasher Safe; Nestable and Easy to Transport Backed by the Klean Kanteen Lifetime Strong as Steel Guarantee Durable and High Quality Food Grade Single Wall Non-Insulated 18/8 Stainless Steel Construction Large opening fits ice, easy to drink from; Compatible with all Klean Kanteen Pint and Tumbler lids (16/20oz only) Easy to clean electropolished interior doesn&#039;t retain or impart flavors Backed by the Klean Kanteen Lifetime Strong as Steel