It is not as at ease as other frameless masks like the Cressi F1 mask. We think Hollis have tried using to enhance rigidity of your mask for sturdiness and safety by strengthening the skirt product which means it may possibly pinch and dig If your mask just isn't a https://siliconefacemaskcover05813.blogoxo.com/28150769/a-simple-key-for-m1-silicon-chip-unveiled