THIS LONG-SLEEVED MEN'S TOP IS MADE FROM BIOBASED EVO® NYLON SOURCED FROM CASTOR BEANS. NOT FOSSIL FUELS. AND AN INNOVATIVE PART PLANT-BASED ELASTANE FOR ADDED STRETCH. IT HAS A MINIMAL. SEAMLESS CONSTRUCTION FOR COMFORT. AND IS DESIGNED FOR EVERYDAY—FROM ON-THE-GO TO LOUNGING AT HOME. IT IS TREATED WITH NATURAL PEPPERMINT OIL (PPRMINT™) FOR ITS ANTI-ODOR PROPERTIES.