Based on the Heritage, Jubilee, Bavaria, and Original Bundt designs, these microwave molds turn out hot yummy cakes in a flash. Great for molding ice cream too. Have your mug cake, and eat something pretty too! Works with all mug cake mixes and the many quick, easy, delicious mug cake and microwave-brownie recipes online. Do not fill more than 3/4 full. Use oven mitts to grab a hot mold. Set of four 1 cup microwavable molds, top rack dishwasher safe. Each mold exterior is 4.4 inches in diameter and just under 2 inches tall, interior diameter ranges from 3.9 to 4.1 inches depending on bundt design. Proudly made in the USA by Nordic Ware.