I have more than 1 pair of these... so that I increase the chances of locating them when I need them... usually when I'm running late out the door. Anyway, the comfy rubber parts do call for a little maintenance after spending the day in the sun sweating on them. When I say maintenance, all I mean is a little rinse off. If you do not do this after many months of wear, the nose & temples start to break down, as any rubber parts would. Julbo has replacement parts on their website, so if you learned this the hard way like me, it's not the end of the world.
I always have a retainer to minimize misplacement. My fav's are ones that bc.com doesn't carry, but should: Hides Classic 3-in-1 Sunglasses Retainer.
It's almost impossible for me to go back to my other sunglasses after using these several years. If I use other sunglasses, I find myself taking them on & off much much much more often, which is a complete pain when doing anything active, esp activities involving a helmet like climbing. The photochromic expands the range of brightness comfort on anyone's eyes.
Since I loathe sunscreen on my face, I love the the rubber side thingies as they provide instant sun protection... These glasses aren't cheap, but plastic surgery for crow's feet is way more expensive. FWIW, another climber friend of mine hates the side things and wears them without.
I noticed that Oakley has an "asian-fit" line of frames. FWIW, I'm an asian female & these frames fit me well enough for me to have multiple pairs. The part that wraps around the ears are bendy, allowing for a customized fit.