Description: 【Straight Sublimation Tumbler】: Absolutely straight, same circumference between top and bottom,and also the tumbler is ready with a polymer coating for Dye sublimation prints using heat press or convection oven.so it can allow you design your cups with your perssonal picture, which can be special gift for your friends or anybody you care. 【Completely Straight】 : This sublimation skinny blank tumbler is completely straight not tapered,which is easy to make the sublimation print. 【Two Way to Sublimate Your Tumbler】: If you choose heat press machine to sublimate your tumblers,Recommended time is 50 seconds,Recommended Temperature is 334 Degree Fahrenheit,If you choose oven to sublimate your tumbler,Recommend time is 6 minutes,Recommended temperature is 300 Degree Fahrenheit; Attention:Both best done with sublimation shrink wrap 【Advanced Insulation Technology】: 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.and also our tumbler comes with a push on lid keep any dust particles getting in and stop major spills. 【Durable Material】: Our sublimation tumbler is made of 304 stainless steel. Durable and double walled, not easy to break. Specification: Material: Stainless Steel  Size Chart: 12OZ: 14.6cmx7.4cm/5.75inchx2.91inch 15OZ: 15.5cmx7.4cm/6.10inchx2.91inch 20OZ: 20.7cmx7.4cm/8.15inchx2.91inch 30OZ: 24.3cmx7.9cm/9.57inchx3.11inch Package Includes: 1 Sublimation Skinny Tumbler Note: Please allow slightly errors due to manual measurement and different monitors.