18 Embroidered Cotton Twill Hat is professionally designed and embroidered in U.S. Find other adult humor designs or create your own custom hat. This custom design is all about red, humor, adult, 18, adult-humor, white, sign, plus, circle. Embroidery is the most durable option available and won't wear off. This is one of our best sellers as a unique gift for Father's Day, Valentine's Day, Christmas, birthdays, anniversaries, parties, special events and any occasion. It's available on baseball, snapback, trucker, bucket, beanies, knit, winter hats & caps.