You've heard of heat-changing glasses and mugs. How about a cold-change glass? That seems quite appropriate given the chilling subject of this Friday the 13th Cold-Change Pint Glass. At room temperature, you'll see Jason's infamous mask and the Friday the 13th logo. But when you add a cold beverage, the mask and logo are dripping with blood! Don't miss this one! Do not microwave. Hand wash only. Not dishwasher safe.