Garments engineered with GORE-TEX® fabrics are durably waterproof andwindproof and very breathable - guaranteed. They provide reliable weather protection and maximized comfort in all weather conditions. Excellent management of perspiration leads to optimized body-heat regulation. No post activity chill. No cooling off due to wind chill. Each square inch of a GORE-TEX® membrane contains 9 billion pores. Each microscopic hole is 20,000 times smaller than a water droplet, making it impossible for rain, snow and sleet to pass through. While each pore of a GORE-TEX® membrane is smaller than a water droplet, each is 700 times larger than a water vapor molecule. This is what enables GORE-TEX® fabric to breathe so that sweat vapor can escape, keeping you dry from the inside - the ideal solution for hunters looking for broad weather protection and style.