It's not necessarily as at ease as other frameless masks such as the Cressi F1 mask. We believe Hollis have tried using to boost rigidity of your mask for sturdiness and safety by strengthening the skirt material meaning it could pinch and dig Should the mask is just not a https://silicone-female-mask-uk46544.csublogs.com/34550249/new-step-by-step-map-for-q1-masking-tape-1-1-2