Vapor features NikeSkin, a super lightweight, one-piece, ultra-thin synthetic that conforms to the natural curvatures of the foot. Upper wraps snugly around your foot maximizing touch without compromising strength Peeva sockliner with Poron inserts mirrors the natural contours of the foot to enhance comfort. KNG comes in different grades from KNG 75 to KNG 100. This is the only material that maximizing touch and strength!
