Skeptical about inserts over direct Rx lenses, but decided to give RP a try given their history with the design. The insert has been working great and the sunglass has been better than expected. The adjustability of the nosepiece has been outstanding, I only wish this particular model had adjustable temples/temple tips to customize the fit better, especially with certain helmets, and the only reason for the deduction of 1 star. I have usually gone with "O" sport eyewear over the years, but I am now questioning my prior choices. The RP photochromic lenses have been outstanding. Clarity is excellent, venting has been very effective, and the degree and speed of lens darkening blows away anything "O" has to offer. Now I'm looking forward to trying a a pair of RP full shield sport glasses.

These are my go to Mountain and Fatbike glasses. With the photocromatic lenses these are perfect for when gets dark during our rides especially in winter when its dark at 4pm. These also accept my Rx inserts so great when I don't feel like wearing my contacts. Plus they look sweet mated with my Protera helmet.

I spent a lot of money on the Fotonyk sunglasses and had very high hopes but I am now having to purchase alternative glasses as every time I wear these out biking my eyes are sore for days afterwards. Polarization is needed on these lenses as in bright sunshine they allow too much sunlight and glare into your eyes as well as windflow. I ordered a second lens for these glasses which when I look at the choice of lens available it still allows a lot of light into your eye. The second lens was just as bad as the first.