It's not necessarily as comfy as other frameless masks including the Cressi F1 mask. We think Hollis have experimented with to reinforce rigidity on the mask for longevity and safety by strengthening the skirt content which implies it could possibly pinch and dig If your mask is not really a https://kyleriyglp.jiliblog.com/85834644/examine-this-report-on-m3-gas-mask-history