This U.S. industry comprises establishments primarily engaged in manufacturing men's and boys' underwear and nightwear from purchased fabric. Men's and boys' underwear and nightwear 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. Examples of products made by these establishments are briefs, bathrobes, underwear T-shirts and shorts, nightshirts, and pajamas. Cross-References. Establishments primarily engaged in-- ? Knitting men's and boys' underwear and nightwear and/or knitting and manufacturing men's and boys' underwear and nightwear--are classified in U.S. Industry 315192, Underwear and Nightwear Knitting Mills; and ? Cutting and/or sewing materials owned by others for men's and boys' underwear and nightwear--are classified in U.S. Industry 315211, Men's and Boys' Cut and Sew Apparel Contractors.