As a highly immune compromised older person, it is absolutely necessary for me to keep masking up during this Pandemic - which p.s. as of August 2023 is still active (in fact we are going into another wave right now). I find that this provider is excellent and the masks are well made of combined polypropylene fabric, which actually is an extruded [as opposed to woven] material which does not allow virus particles to breach the mask. These are highly breathable and the ear loops are very soft and ear-friendly. I get the "standard" size, which fits my face very tight... the nose wire is strong and if properly bended down into the nose when you put the mask on, provides a solid seal to the face. Great company and fast service and a price which cannot be beat - who provide a full guarantee of the mask certification of authenticity. If properly handled and quarantined after use - if not** soiled, can be reused - althought not* washable. They are available in numerous sizes as well as colors.