1.Material These sublimation mugs is made of high quality ceramic, BPA , which greater temperature resistance for long-lasting use. Freezer and microwave 2.Quality Coating Our sublimation mugs 15 oz are coated with high quality sublimation coating which achieves bright, white coated surface and high-density colors that will not washed off even by dishwasher 3.Easy To Clean The straight side and the wide mouth of the sublimation mugs blank allows easy accessibility to the bottom of the sublimation blanks for an easy and thorough cleaning by no matter dishwasher or hand with a sponge 4.Customize Mugs These Sublimation Coffee Mugs are customized for various DIY creativities, you can print anything on it through heat press! Perfect for creating photo mugs, promotions, graduation gifts, weddings, personal keepsakes, artwork showcasing, and any creative job you may want with your wrap heat press machine