4.2 oz., 100% Airlume combed and ring-spun cotton jersey, 32 singles; Heather Colors: 52% Airlume combed and ring-spun cotton, 48% poly; Athletic Heather: 90% Airlume combed and ring-spun cotton, 10% poly; Sideseamed; Tear-away label; BELLA+CANVAS uses sustainable manufacturing processes with Blue Sign certified dyes, efficient dye houses that adhere to the state of Californiaís 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.;