The VYRL Series 50/50 shirt is constructed of 50% mesh skin neoprene and 50% UV Spandex rash guard material. The 1.5mm mesh skin neoprene chest and back panels block wind chill, maintains core body temperature and provides extra rash and harness protection. The Spandex arms, underarms and side panels offer unrestricted flexibility and pullover no-zip design works well with all types of boardshorts and harnesses. Perfect for warm water riding or a travel top for the tropics.