I don't love this mask. I'm actually going to put it on craigslist. It's heavy. It doesn't block out the UV rays and I end up with sun burn on my face and neck. I do like that it's bright when not engaged by an arc. I don't find the windows useful. I bought this model because if the windows, however I'm an aluminum welder and they don't dim. So they have been covered up since day one. I wouldn't suggest this mask to my friends or coworkers and do wish I could trade in for a lighter model. 8 hours a day is too much with this mask.