While the Patriot's do have a volume control knob on one of the ear pieces, they do not block out all of the noise. But, when you've lost some of your hearing anyway, these do just fine. They come with a set of batteries and are comfortable to wear.
The battery door slides out nicely. But, it's was difficult to get it back in, since the batteries have springs at the other end. It wasn't impossible. Just, a bit frustrating.
The earmuffs do come with a 3-year warranty. They list for $49.99. But, they sale for $24.95.
Vital Link: Amazon