4.9 oz./yd., slubbed jersey. 53/43/4 organic cotton/bamboo viscose/lycra spandex. Made with organic cotton and renewable bio-degradable bamboo fibers. Relaxed fit. Moisture-wicking. Anti-odor. Self U-shaped collar. Longer short sleeves. Curved shirttail hem. UPF 50+. Tagless at inner neck. Sewn in care and content label at lower left side seam. Woven tab logo folded over left side hem. Fabric and garments are manufactured in a facility 100% powered by solar and wind energy. Fabric and garments are manufactured in a GreenCo certified facility. 450g of CO2 are saved with the production of each garment.