Well-made, not cheap, illegible instructions Masks are lightweight and pretty well sealed. We are told that they are very effective, which I hope is true. One strange thing is the instructions on the package-they are written in very pale. greenish writing, making them almost impossible to read!

These are the best masks I have found These are the best masks I have found. Comfortable and feels very secure. Customer service is outstanding.

COST!!!! COST!!!!! We have to order a months supply at a time. My wife is a severe asthmatic, and cannot NOT use the Chinese made KN95 masks due to air flow restrictions PLUS every time she has attempted to use a Chinese KN95 masks she has immediate skin reaction and immediate sinus infection and restricted airflow. So the Nano Air Mask is the only true protective mask she can use, which estimated cost at current pricing is $1200 per year for her masks alone. Due to being high risk category persons we have to use masks and gloves when out in public, which costs hundreds of dollars to keep supplied and safe. Tough to do when you are on a fixed income and medically not allowed to work any longer. Wife is an RN with Adult onset Asthma, and I'm a Respiratory Care Practitioner both with 40 years experience each.

It is a good mask and provides a better… It is a good mask and provides a better seal around the area covered. It's just more time to get it adjusted properly around the face. As an eyeglass wearer, I do prefer masks that have the elastic around the head and not the ears. The mask also fits a little large for my face.

Love these masks and made in USA Love these masks. Sturdy and stylish, easy to wear and avoid glasses fogging. Fast shipping, and LOVE they are made in USA. Pricey but worth it. Have ordered several times to share with family and friends. Prefer the classic Nano in black with subtle logo over the new brand, so hopefully they remain available.