Ceramic coated tin mugs are designed for the camp or trail. Artwork is from an orginal wood burning by Tom Reverman. Sold individually, or here as a set of four. https://www.5thseasonmi.com/product-page/set-of-4-wood-burned-camp-mugs
 
Mugs hold 12oz. and measure approximately 3"x3.5"
Hand-washing is recommended