Nayked Apparel Women's Weightless Flowy Relaxed Tank 65% polyester Lightweight 3.7 oz fabric. 65% Polyester/35% Viscose (Triblends: 50% Polyester/25% Ring-spun Cotton/25% Rayon, Slubs: 50% Polyester/38% Ring-spun Cotton/12% Rayon) Material has a vintage feel that provides an unmatched draping characteristic for that retro look. Nayked NAY-B-3888.