STT Sports Lettering Co. (est.1982) is a full service embroidery house specializing in tackle twill and other appliqué processes which we have perfected through our work on the game worn and retail jerseys for the NFL’s Seattle Seahawks, MLB’s Seattle Mariners, WNBA’s Seattle Storm, WHL’s Seattle Thunderbirds and Everett Silvertips and the NCAA’s University of Washington Huskies. We also heat apply the MLS’s Seattle Sounders FC game worn and retail jerseys.