Come and see our amazing products. 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. Pls confirm with us about the packing info, stock color and exact production time before placing your order.