This enamel camp mug features a watercolor illustration of Pacific Northwest wildflowers. Steel and enamel, 12 fluid ounces. Do not microwave. Due to the rustic nature of camp mugs, you may see small imperfections such as bubbles and other rustic features. The mug is approximately 3" tall and about 3.5" wide, plus another inch for the handle. It looks just a bit smaller than a standard ceramic coffee mug, but because metal allows for thinner walls, it actually holds a little bit more capacity than a standard mug!