Garden center as a source for spunbond fabrics

80 gsm spunbond polypropylene 

This is what I'm making masks from right now - and possibly going forward seeing as it is so cheap

270 gsm spunbond polyester

I've no idea whether this is allowed for 

kitchen-sink masks. Indeed it could be mislabelled:

 

End of July update:  Even a one layer mask sewn from the 270 GSM spunbond polyester is a TERRIBLE fabric for mask making:  impossible to sew with and impossible to breathe through.  Don't waste your time on this fabric.