Buzz Rickson's basic sweatshirt is made of 13 oz. heavy cotton. The very high quality sweatshirt fabric is woven in Japan on original old 4-needle loop looms from 1920\. These looms are special machines used to produce sweatshirts without side seams, also called tubes. It hardly gets any better than this! * 100% Baumwolle * 13oz Jersey * Circular knit, no side seams * Rib cuffs: Neckline, sleeves, hem * Regular fit * Made in Japan Horizontal knitting" is a knitting technique in which the body fabric is used horizontally and the ribbed material is used on the sides. Horizontal means "sideways. The horizontal knitting prevents the length from shrinking and uses vertical panels on the sides to allow for elasticity in both the horizontal and vertical directions. The seamless shoulders allow for a smooth and comfortable fit, but require a large workspace for cutting, and the neck is hollowed out, which is an extensive process. The U.S. military has long held interservice football and othe