It's not as cozy as other frameless masks like the Cressi F1 mask. We imagine Hollis have tried out to enhance rigidity of your mask for longevity and safety by strengthening the skirt material which suggests it could pinch and dig if the mask is just not a ideal fit https://m1siliconemask39516.bloggin-ads.com/51951261/detailed-notes-on-do-silicone-masks-work