Seirus Innovation Dynamax Combo Clava Weathershield Facemask for Full Head Neck and Face Protection Micro Denier Thermax Imported Thin, warm, wicking, wind-blocking, stretchy Dynamax has more stretch, more warmth, more wicking and wind Block but still thin Hood with built-in Contoured weathershield facemask Seirus' exclusive dynamax - dual density, Micro denier thermax