[lloydarmbrust]

Haha thanks.. this one got out of hand. People kept asking me if x or y mask was "good" and I was just really curious... one day I looked up and had tested more masks than the CDC.

I learned so much though about how different manufacturers do things, where they cut corners, where they invest.

One crazy thing I learned was that almost all of the KN95s on amazing were not following the GB2626-2019 ("KN95") mask spec.... even though it's not that hard. So I decided to make a KN95 that followed the spec! Great way to really get into the product.