It is far from as at ease as other frameless masks like the Cressi F1 mask. We think Hollis have tried to improve rigidity of your mask for longevity and safety by strengthening the skirt materials which implies it might pinch and dig In case the mask isn't a ideal https://mask-silicone49028.thecomputerwiki.com/4905465/fascination_about_m3_gas_mask_replica