Grumpy Cat®, gray mug by PetRageous Designs® has an 13.5oz capacity. The exterior of the mug has a collage of cartoon-style Grumpy Cat® artwork stitched around the perimeter at both the top and bottom. In the artwork either Grumpy Cat’s eyes, ears and mouth are covered. Grumpy Cat® is scripted in the middle. The mug is made of 100% ceramic stoneware and is dishwasher and microwave safe.