I have purchased Maui Jim sunglasses for years and have seven pairs. I wanted a new pair for hiking in the desert SW. My eyes are photosensitive and the Maui Jim glasses have always prevented me from squinting and having my eyes water in the heat. These glasses are wonderful for someone like me with a smaller face, because they are meant for smaller faces. Aside from the top-notch lens quality, these sunglasses do not slip or fall from your face.  They are very secure yet comfortable.  I have worn them while hiking up and down many terrains, in the ocean, and while bike riding. I purchased the sunglasses with the gray lenses which work well in very bright sunlight.