20oz Sublimation Tumblers: absolutely straight, same circumference between top and bottom, and also the tumbler is ready with a polymer coating for Dye-sublimation prints using a heat press or convection oven. Double-Wall Vacuum insulated thermal design is good for keeping your drinks warm or cold for a longer time, so you can use it in any season. Made of 304 stainless steel, more durable than other ordinary plastic.
