OK. I’ve been researching alternatives to the XCaper Mask. One interesting candidate is the HKPocket Smoke Escape Hood. Looks like Chinese Mfg. flat ,lightweight ,foil envelop in vinyl like notebook. Single use/ One Size Fits All. $32.95, Free Delivery

Promises 20 minute protection from : CO, CO2, HCL,HS,HCN, H2S, Ammonia, Acriclic Acid, Carbon Tet., & Acolein, thru a 6 stage filter ,inc. activated charcoal filters. Potential CBW protection. Fire Resistant Hood. ( I’m sounding like a commercial. I know).

I have looked and cannot find independent testing or reviews. Does anyone know of any useful reviews or evaluations or even opinions?

My goal is a mask to facilitate evacuation from a high-rise building, smokey subway tunnel, or does dust field from a building collapse such as occurred after 911 at the WTC Collapse. Mask would be carried in a small backpack ( 8-9 L) EDC / GHB along with other gear