3.7 oz., 65% polyester, 35% viscose; 30 singles; Athletic Heather is 52% polyester, 48% viscose; ; Marble colors are 3.5 oz., 91% poly, 9% combed ringspun cotton, 40 singles ; Heather Navy & Stripe colors: 70% rayon, 30% polyester; Racerback with sheering at seam; Sideseamed; Merrowed bottom hem; easy, drapey fit; Tear away label; BELLA+CANVAS uses sustainable manufacturing processes with Blue Sign certified dyes, efficient dye houses that adhere to the state of CaliforniaÆs 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.;