This U.S. industry comprises establishments primarily engaged in manufacturing men's and boys' outerwear shirts from purchased fabric. Men's and boys' shirt (except work shirt) jobbers, who perform entrepreneurial functions involved in apparel manufacture, including buying raw materials, designing and preparing samples, arranging for apparel to be made from their materials, and marketing finished apparel, are included. Unisex outerwear shirts, such as T-shirts and sweatshirts that are sized without specific reference to gender (i.e., adult S, M, L, XL) are included in this industry. Cross-References. Establishments primarily engaged in-- ? Manufacturing men's and boys' work shirts from purchased fabric--are classified in U.S. Industry 315225, Men's and Boys' Cut and Sew Work Clothing Manufacturing; ? Manufacturing men's and boys' underwear T-shirts and underwear tank tops from purchased fabric--are classified in U.S. Industry 315221, Men's and Boys' Cut and Sew Underwear and Nightwear Manufacturing; ? Cutting and/or sewing materials owned by others for men's and boys' shirts--are classified in U.S. Industry 315211, Men's and Boys' Cut and Sew Apparel Contractors; and ? Knitting men's and boys' outerwear shirts or kn itting fabric and manufacturing men's and boys' outerwear shirts--are classified in U.S. Industry 315191, Outerwear Knitting Mills.