Front features the skull and cross bones with the word PIRATE, Treasure chest and the word BOOTY on the other. The back of both mugs reads: YOU ARE MY TREASURE. Perfect for a couple you'd like to ship, ar ar ar. This mug set was created from stoneware clay, kiln fired twice to 1900 degrees. It was made using all lead free, non toxic, eco friendly materials. This set was created for you to use and enjoy on a daily basis!. Dishwasher and microwave safe. Mugs measure 3.5 x 4 and hold 14 oz each.