It's not at all as at ease as other frameless masks including the Cressi F1 mask. We believe Hollis have tried to boost rigidity of your mask for sturdiness and safety by strengthening the skirt product which means it could possibly pinch and dig In the event the mask is https://soviet-mm1-gas-mask72737.blog-kids.com/28507931/5-simple-statements-about-silicone-mask-real-explained