This product was a complete letdown. As my tests showed, the anti-fog SOLUTION didn't work at all .After only a few minutes of use, the snorkel lens was completely fogged up, making it impossible to see underwater. The only pro I can think of is that the snorkel itself is comfortable to wear. Unfortunately, this doesn't make up for the fact that the product doesn't deliver on its main promise. Sorry to say, but I cannot recommend this product for anyone in the Sports and Outdoors category..See full review