This Caution Adults at Play Beer Mug Sign is a great way to add some fun to your workplace or at home. Printed on the same materials as our official safety signs, your Caution Adults at Play Beer Mug Sign will provide laughs in the office, home, or as a gift. 12"x18" Weather resistant, will not rust or corrode. Easily visible. Aluminum with pre-drilled mounting holes with 3M sheeting.