The issue is certifications. All well and good to advertise good for CO, etc., but has the mask/hood passed any sort of independent certification process? Ask to see a copy of the certification and testing. At least as a minimum. Back when I was looking at this stuff, few claims were backed up any actual independent testing.
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Doug Ritter
Editor
Equipped To SurviveŽ
Chairman & Executive Director
Equipped To Survive Foundation
www.KnifeRights.org
www.DougRitter.com