The Black PhotoMug truly illuminates your design which is printed onto a white panel to produce a vibrant photo quality image. Our unique and patent protected SatinSub PhotoMugs have an innovative satin finish. These tactile mugs do not reflect light like traditional gloss mugs resulting in a crisper, sharper image that really makes your design stand out. SatinSub mugs come with the Duraglaze guarantee: Duraglaze PhotoMugs are the only dishwasher proof PhotoMug passing the British Standard BS EN ISO 12875 – 4:2006 for mechanical dishwashing resistance of utensils. Look for the Duraglaze base stamp for your peace of mind. Protected by patent.