These cups are made of clay and ceramic. They are Dishwasher Safe and Microwave Safe. The color is permanent on Ceramic, it will not peel off or fade out as Bone China Products do. This product will be an excellent pick for you. It is durable and long lasting. The teacups are made without any chemical process, reusable and washable also it is microwave safe and 100% Handmade out of clay, fired at high temperatures by the hard-working potters of Uttar Pradesh, India. These tea mugs are microwave and dishwasher safe. Ideal Gift for Special Occasions: that they will cherish forever and smile when they look at it and remember! Best Gift for Office, Father, Brother, Sister, Kids, Children for Birthday Return Gift, Birthday Gift, Birthday Party Gift, Family, Friends, Mother, Diwali Gift Items, Valentine Day Gift, Gifts for Girlfriend, Boyfriend Love, Husband and For Loved Ones.