Goggle to helmet fit is the answer for air leaking in. Take your helmet to a dealer that will let you open every box of goggles and fit them to your helmet. Amazing results. Do not buy ski goggles from the sporting goods store and expect them to fit your helmet. Those are designed to fit your face with a beenie on, not a helmet. I only wear a baklava without any of those breath box items and my helmet works fine. Did this with my SR1 helmet and my Fly helmet. I bought many googles before an old timer showed me this at Cooke a few years back. Not all goggles are created equal. You do NOT need to spend big dollars on big name goggles to work. Double lens, and fitment is key.