Keeping You Warmer Blocks the wind, keeping you warmer and more protected from the elements. Eliminates the wind chill effect. Remains durably windproof after repeated use and launderings. Greater Comfort Allows perspiration vapor to escape from the garment, so you will be more comfortable. This sweat vapor transfer also helps prevent conductive heat loss in colder conditions by keeping your body and clothing layers drier.
Some competitive fabrics use a tightly woven fabric which is breathable but merely wind resistant.
Other competitive fabrics are coated for windproofness but are not highly breathable.