I have had my mask for a year. I purchased it mainly as a novelty, as I only swim at the local community pool. It is okay for the price, but there are some definite drawbacks.The first major problem is that the seal over the bridge of my nose is never complete, which means that when I breath out, instead of all the CO2 going out the valves, two streams of air escape from the mouth part of the mask near the corners of my eyes. After 15 or 20 minutes of swimming, this constant jet of air right intSee full review