Ringed Bottom 20oz Sublimation Tumblers: Polycoated Tumbler for Dye sublimation. Personalize using a convection oven and shrinkwrap with full color images, patterns, custom art, or quotes to create a special gift for men and women alike! Bight colors Guaranteed. Holds 600ml. Advanced Vaccum Insulated Technology: Double-Wall Vacuum insulation for keeping your drinks hot or cold. Useful any season and comes with a clear snap-on slide lid to keep debris out and stop major spills