Mugs are dishwasher/microwave-safe, printed on white ceramic, 15oz., C-handle, lead and BPA-free. It will turn perfectly on white or pastel colors. I don't do dark colors, such as black or navy. Minimum order is 12 pieces, but you can mix colors from 2-3 backgrounds we confirmed, usually I do 1 color white and 1-2 colorful ones. Great product for your downtown gift/souvenir shop/antique mall for locals and visitors! The product pictures represent my artwork style, product visualization of some cities landmarks. I illustrate in the only way, using real photos of historical buildings, landmarks and icons as references. Digital realistic style with highlighting important details, outlined with black trim! Please choose up to 10 landmarks to make them all well visible on products. I have illustrated 80+ cities of 30 States. Feel free to choose from cities in stock or make a custom illustration with me FOR FREE with ordering a little bigger minimums with the first order! VERY IMPORTANT#1: Please, check my bio/page info/story to find your city on the grey picture with list of cilies in stock (please zoom in the picture and if I already illustrated your city you are very welcome to order a lower minimums without customization). If I illustrate a new one for you, please choose customization option. You'll be ordering with customization for FREE but being a new customer I request you to order a little bigger minimum quantities as appreciation of the time I spent for illustrating, thanks for understanding! VERY IMPORTANT#2: If you're ordering the customization, please be ready to check Faire messages from me in 1-2 days to confirm if I found the landmarks references correctly I could start to illustrate your city! AND in another 2-3 days to confirm the ready pattern I could print and ship out your order! It is very important because late shipping and not giving the timely response from your side might be the reason of cancelling the whole order! Please leave your cell number receiving text messages (customization field requires that) I could text you with any questions and confirming pattern for starting to print your order. Let's make your beautiful city illustration together and on time!