5.4 oz, 32 singles 52% airlume combed and ringspun cotton, 48% polyester Athletic Heather: 90% airlume combed and ringspun cotton 10% polyester 1x1 rib High neck Fitted Sustainably produced Wrap certified and FLA participating company 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 usage cutting facilities in Los Angeles that run on partial solar power with comprehensive recycling programs for paper waste and fabric scraps.