The 20 Oz Tumbler Is Double Walled And Vacuum Insulated; Therefore, The Cups Ensure That Cold Beverages Keep Cold For 12 Hours And Hot Drinks For At Least 6 Hours; So It Will Bring You Coolness In Summer And Warmth In Winter. These tumblers are great for gift giving or just a gift for yourself. Whether you want a name or a business we can do it. This does require that you have a vector or svg format of your logo for us to use. If you do not have that there will be an artwork charge that will be added separately. Send us a message and we can discuss it further