Eco,
I have a pair of the Festool glasses that I wear mainly as Sun glasses. I need bi-focals in the shop these days for better or worse...LOL I will warn you that the Festool frames will likely break long before you will need new lenses. Both sides of mine have broken in the last couple of weeks. The weak spot is about 1 inch in from the end of the earpiece where it goes over your ear. If the thin blue part breaks there is little support by the softer green material and the thing sort of flops around like a dead fish. Having worked in the CAD design and analysis world for many years this is probably the point were the software would predict ultimate failure of the part...rather thin for the load it must flex and support over time.
All this being said, I have had and used the glasses virtually every day for probably well over a year; so they are a fair value in my mind none the less. I will probably buy another pair if they are available as they are comfortable and Ilike the way the sun lens wraps in close to the eye all around.
The best safety glasses and even sun glasses on the market right now for the money are the ones that Woodcraft sells IMHO. They are $6-7 a pair and even offer different bi-focal lenses. The next best are the sun and safety glasses offered by Stihl at a Stihl dealer and those run about $10 a pair.
Best,
Todd
