Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Comfortable

I bought these for my condo renovation demolition job, for there is a high chance of lead paint. These are rated for lead abatement, but make sure you know what you are doing. Most people should hire a professional. It also protects against dust, mold, and fine particulates. I wouldn't use it for fumes, but good for dust. It seems very comfortable, and fits snugly, and has adjustable straps. Pretty quick to get on and off once you get the straps set right, and you practice a few times.