I've worn these glasses for 2 years (mainly for cycling). Perfect in low light conditions (early eve, rain) brightens everything up. Great eye facial coverage on the road. Perfect fit though I do have a small head. Not the most stylish - but good enough if you are looking for coverage and functionality.
[1 of 1 customers found this review helpful]
Unfortunately, I have a series of complaints with the Julbo Instinct. It's not as stylish in my hand as it is on the web page - I hesitate to call it ugly, but my wife and I agree on this. Admittedly, these are my first photochromic sunglasses, yet I could not distinguish any change in light transmission based on ambient light conditions after either brief or prolonged exposures. Wearing the Instinct for longer than an hour hurt my ears - despite being advertised for a Large fit, the temples were too tight for my head (size 7 1/2 hat). Worst of all, the optics were distorted and actually made contrast and visibility worse in a variety lighting situations.
Sorry to return these sunglasses[...]!