51% organic cotton, 41% bamboo viscose, 8% lycra® spandex; Moisture-wicking, UPF 50+, anti-odor; Made with organic cotton and renewable bio-degradable bamboo fibers ;Self collar with mesh lining, tagless at inner neck; 8″ lock down zipper; Drop logo mark at upper back ; Under neck seam; No top shoulder seam; Sewn in care and content label at lower left; Self cuff with mesh lining; Open bottom; 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 ;