Just a Guy Who Loves Cats mug, funny cat mug, gift for him. Back reads: Real men Love Cats Great Men Change the Litter Box. Inside is glossy black. Handmade Stoneware mug fired to over 2000 degrees and created using all non toxic. lead free materials. The mug measures 4 x 4 and holds 16 oz. Safe to place in the dishwasher and microwave. Made to be used and enjoyed!