Comfort 100% high quality CR neoprene with Nylon fabric double sides for use in warm waters diving.Fairskin exterior on the chest panel , and flat-locked seam construction.Silverskin seals at the collar, wrist & ankle to minimize water transfer.YKK#10 Delrin zipper on the back and zipper pull-tab with Velcro closure.YKK#5 Delrin zipper on the collar, wrists and ankles for easy dressing.Integrate printed kneepads for abrasion resistance and protect neoprene.