Now you can own the official “Sons of Arthritis” Biker work shirt to show your true colors while riding that Hog or just strutting those achey bones!! Made out of industrial strength fabric 65% polyester and 35% cotton. Fabric is stain and wrinkle resistant. Tend to run on the small side. An upcharge for sizes 2XL, 3XL & 4XL applies at checkout. Brands may vary but not the quality.