HEALTHY MATERIALS The pasta bowls are made of durable porcelain, a type of premium ceramic. MULTIFUNCTIONAL USE 9 inch pasta bowls set is MICROWAVE SAFE, OVEN SAFE, FREEZER SAFE, DISHWASHER SAFE, BROILER SAFE. It can be transited directly from a freezer to a oven, to serve your food on the table without changing containers. OBVIOUS ADVANTAGES The ceramic pasta bowls construction offers even heating and superior heat retention, keeps food hot on the table longer. And It is suitable for microwave, freezer and oven. BEAUTIFUL PATTERN The 4pcs salad bowl set features unique pattern design and bright color for easy daily use.