One size fits some
Nice soft, mostly poly fabric. Will shrink only a little when washed. No elastic in ear loops so any adjustment for head size is done through stretching it in its entirety.  Smaller heads should expect a very loose fit and all should expect air to escape out to the sides as the overall seal with the face is lacking. Personally I find these looser ones more comfortable to breath with but in the same 'breath' that would weaken the efficacy of it as a useful tool to prevent covid 19.
Rating: 3 stars