As the market leader, AGU has an extensive collection of men's rain jackets. The men's rain jackets are 100% waterproof and windproof thanks to the Poray 5000 coating. This material wicks body heat away rapidly so that you don't cool off from transpiration moisture. The Poray material has microscopically small pores allowing transpiration vapour and condensation out, but not letting rain in. Water droplets (so, drops of rain as well) have a far larger structure.