• The coffee mug made of ceramic-Fine porcelain, smooth glaze, easy to clean. Nice feel to them, both in weight and materials. Perfect size, shape, big handle, it's also great for brewing from the coffee machine. The colours are beautiful, bright, with a bit of gloss. Perfect for you to drink milk, tea, coffee and water. Our ceramic mug set adopts the real gold roasting process and is fired in a high temperature kiln of about thousands of degrees. The colour is full, durable and not easy to fade. Each mug went through a comprehensive third-party safety and quality testing to ensure it is food safe. These porcelain mugs are made of high-grade china, Because we want you to enjoy it without any worries. Coffee mug with warmer- Coffee warmer is designed to keep your beverage at constant temperature and keep this temperature whole day, which comfortable temperature. Constant temperature coaster let you enjoy your hot coffee at any time. Our electric cup can reduce the cooling speed of hot drinks, which is maintained throughout the day. It is neither too hot nor too cold. Especially suitable use in cold weather.