50% poly 25% combed and ring-spun cotton 25% rayon, 40 single 3.8 oz.; Black Heather Triblend: 70% combed and ring-spun cotton, 15% poly, 15% rayon; Slim fit; Sideseamed; Tear away label; BELLA+CANVAS uses sustainable manufacturing processes with Blue Sign certified dyes, efficient dye houses that adhere to the state of California?s EPA regulations around waste water treatment and usage, and cutting facilities in Los Angeles that run on partial solar power with comprehensive recycling programs for paper waste and fabric scraps.