There's few of them still out there... Let Dad know how you really feel!. Double sided "Rad Dad" print on this coffee mug. It’s BPA and Lead-free, microwave & dishwasher-safe, and made of white, durable ceramic in 11-ounce size. .: These 11oz (0.33 l) mugs are made with durable white ceramic so that your prints can stand out.  .: All mugs feature a comfortable c-handle and a shiny finish so that they're both easy to use and great to look at..: Drink confidently on a daily basis as all mugs are lead and BPA-free.