53% organic cotton, 43% bamboo viscose, 4% lycra® spandex, 140gsm slubbed jersey; Moisture-wicking, UPF 50+, anti-odor; Made with organic cotton and renewable bio-degradable bamboo fibers ;self U-shaped collar; Tagless at inner neck; Longer short sleeves; Extemely curved shirttail hem; Sewn in care and content label at lower left side seam; Woven tab logo folded over left side hem; Relaxed fit; 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 ;