Cheers for the input guys , as PASTOR said , we havent any diveshops that would provide specialist freedive eqip up here. Good point about tightness WHOPPERHEAD , my mask may well be a little tight!
I am equalising my mask also but it doesnt seem to push the frame from my face for some reason[strap too tight?

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The Sherwood Mako looks the biz , i am a little curious as to how frameless masks perform though - i might take the plunge and give it a go. .