These worked so well (and are inexpensive enough) that I bought 4 pairs. Use them on our tandem sea kayak. The yellow polarized lenses are sturdy (but susceptible to sunblock...so spray/apply without glasses on) and the frame is very flexible. The features beneath the water become brilliant and it is very easy to assess potential snorkel/dive locations in all types of light. For function; not style, but they look decent enough to wear to a beach bar.