This new Armor-Skin material is amazing. It is super light, durable and really blocks that wind chill. It can be worn by itself or underneath a wetsuit or other top. It has a similar effect to the "smooth skin" material used on a lot of the wind suits out there but it does not cut or rip easily like they do. We think everyone is going to start seeing a lot more of this material out there! Its amazing how much it blocks the wind for its light and thin feel.