These are the surgical masks that doctors use during surgery. These masks provide the highest level of protection because a surgical room gets exposed to viral, bacterial, mold, and many others diseases that are brought into the surgical room every time a new patient is brought in.
These masks are double sided for additional protection. In addition, the mask is made of a special fabric that allows hot air and cool air to move easily back inside and outside the mask - which allows the mask to remain cool - and reduce the amount of sweating.
Furthermore, the mask head straps are fastened in place by a closed metal bracket that prevents the straps from coming loose. This mask will last much longer than most other masks.
Finally, there is a temper-pedic nose strap, made of memory foam, that allows the nose to fit comfortably in place for long periods without causing redness or other abrasions to the nose.
Shipping: These ship expedited with usps first class mail
Returns: Free returns. If you are not happy with it, then just send it back.