4.2 oz., 100% airlume combed and ringspun cotton, 32 singles; Ash is 99% airlume combed and ringspun cotton, 1% polyester; Athletic Heather is 90% airlume combed and ringspun cotton, 10% polyester; All other heather colors are 52% airlume combed and ringspun cotton, 48% polyest; Retail fit; Unisex sizing; Sideseamed; Tear away label; Pre-shrunk; 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.;