I have been using the "Safe t mags" for the last 2 years.
The only hassle I have had with my dark lens ones is, I have used them for land sailing and kite buggying on beaches and super saline lakes and the hinge screw rusted up so badly it swelled up, cracked the lugs apart and the arm fell off one side. Not bad for 2 years of use though.

It's super glued in the open position and lives on the dash of my Troll now.
Great to use for tying knots or just reading your phone with your sunnies on. I'm sold on them.
I just have to keep increasing the magnification each pair I get. (now up to 2X)
My last set cost $24.99 for "smoked 2X" from our local Agricultural supply shop a month ago.
My Strata Uvex prescriptions cost me $615.00 and are pricks to fit into my pocket when I'm not wearing them, due to the side safety wings. I only use these expensive Uvex clear ones for welding workshop duties and they don't leave the shed. They do handle the grit and sparks better but so they bloody should for the money I've "invested"?