Koolmask

This mask just works! Love it. It has a comfortable, secure seal so that when I power it up, and fans start running, there are no air gaps, no air getting in around the perimeter...I experience no shortness of breath or no breathing fatigue as its pumping in plenty of filtered air. it's a tad big on the face, but its performance is fantastic and more than compensates for the larger fit. Also eliminated the fogging my glasses issue, so that was a plus too.
Mar 21st, 2021

The mask works great, the fans help to drive more oxygen even under conditions that require you to breathe heavily (For instance, weight lifting). So far I've been unable to find something that can provide such level of safety (as far as I know it's better than a N95 since it is airtight) with supplemental air and for a long period of time (up to 40hrs per filter). On the other hand, I should also say that the facemask is rather big. While wearing wear glasses or a face shield is doable, it is also not quite comfortable. Also, it is unlikely that you'll be able to fit a pair of hermetic googles and the mask at the same time.
Nov 30th, 2020