Sweet Protection Ronin sunglasses and a heaping plate of crow ...

A progressive lens design is like a bi- or tri-focal lens in that it corrects more than one vision problem at a time. However, these lenses have no visible lines, improving the cosmetic appearance of ...

To start, the Sentry Prime Sigma comes with two lenses: a photochromic lens and a regular low-light lens. Both boast Salomon’s Sigma technology, which claims to boost color contrast on the snow ...

They also have the added benefit of a photochromic lens. To clarify, the Tifosi Rail XC sunglasses come in two versions: one with interchangeable lenses and another with a single “Fototec” lens.

Smith has launched the ChromaPop Photochromic lenses ahead of the Olympics. Smith, a key player in performance sunglasses, is also using the Olympics to break out a new product, the ChromaPop ...