The Monster Jam Grave Digger Truck Red Eye Skull Cup Mug features a round shape with a skull design, suitable for all occasions. Made of plastic, this medium-sized mug holds 12 ozs and stands 6 inches tall. The multicolor design includes a grim reaper image, perfect for Monster Jam fans. This unisex adults' mug is an original Monster Jam product with a capacity of 12 ozs.