For sublimation and HTV
Stainless steel food grade 304, double-walled insulated for hot and cold use
Comes with a plastic straw and a spill-proof lid/remove it before printing/
Use an oven or a standard mug press 
Recommended pressing settings by the manufacturer 185C for 60sec for a mug press or 200C for 12 min and rotate half time in an oven.
Pressing settings are only a guide and may vary depending on the press, paper and ink used.