13th Birthday Mug Where can I find other 13th birthday designs? Expand or collapse section. In addition to 13th birthday designs, you can explore the marketplace for 13th, official teenager, and 13 designs sold by independent artists. What material is this item made of? Expand or collapse section. Premium ceramic. 11oz capacity. Microwave and top-shelf dishwasher safe. Embedded image. Vacuum-form printed in U.S.A. Learn More » What USA ship methods are available? Expand or collapse section…