13 oz Endeavor Speckled Ceramic Coffee Mugs. While America is enjoying its favorite cup of java, someone will be looking at your logo when you custom print these personalized coffee mugs. The ceramic Endeavor mugs are a bistro style of coffee mug that can be imprinted at up to 50% savings. This line of drinkware is sized perfectly to appeal to all coffee, tea and hot chocolate drinkers. Why not take advantage of our factory direct pricing and advertise your business on this popular mug? Don't forget, our ceramic drinkware can also be bought as blank cups (unprinted) at an even further discount.