I think Bolles are good quality.
The only concern I have is, most glasses that sell for under $100 have polycarbonate lenses, not optical glass. Polycarb is lighter and can be made optically correct ( non-distortional), but it scratches much easier than glass. If you get salt spray on them, the salt will crystalize and scratch the lenses if you try cleaning them with a soft cloth, unless you rinse them first.
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