It's not at all as at ease as other frameless masks like the Cressi F1 mask. We believe that Hollis have tried out to boost rigidity in the mask for longevity and safety by strengthening the skirt materials which means it may possibly pinch and dig Should the mask is https://spenceryuhqz.actoblog.com/28970021/not-known-factual-statements-about-m50-chemical-mask-tm