Hello Good afternoon! I am returning to the subject because I received a tip from a vendor that surprised me. I asked him how was the closing of vents that Rivers West jacket Stalker ATJ has chest and back (horizontally). If it was zippered or some zip. He told me that these gaps do not close, stay open constantly. My question is if it can not cause an undesirable effect in a heavy rain or a very cold day, cold wind or water leaking into the jacket. Has anyone used this or seen any model to give an idea of how this works? Grateful.