50% poly/25% Airlume combed and ring-spun cotton/25% rayon 40 single, 3.8 ounce jersey knit fabric. Side-seamed. Semi-relaxed fit. (Black Heather Triblend 70% Airlume combed and ring-spun cotton/15% poly/15% rayon. Sustainably produced. Wrap ceritifed and FLA participating company.