Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good quality disposable masks.

This is an economical way to get a supply of decent quality basic general purpose masks. They are pre-strung with elastic bands and have a metal pinch strip across the nose to allow for some fit customizing. They are not rated for hazardous materials nor are they meant for anything but for use in well ventilated areas and non-toxic materials. Those who are allergic to dust withh find these to be a good option. I use them for cleaning when I'm working on items such as ceiling fan blades and mini blinds. I even wear one when I clean out the litter box so that the dust that is generated doesn't end up in my lungs and mouth. They are designed with a slightly lower profile so that they can easily be work with glasses or safety goggles.