5 oz., 57% cotton, 38% rayon, 5% Spandex Lightweight performance fabric Crew neckline Four-way stretch, designed for movement Raglan sleeves Retains shape over time Retail fit Side-seamed Tear away label Threadfast is a proud member of the Better Cotton Initiative (BCI). Cotton products from Threadfast support more sustainable cotton farming. Better Cotton is sourced via a system of mass balance.