Incredible sunglasses!
I have been searching for a dark pair of sunglasses for the last few months. I looked long and hard through many different brands, but ultimately came to the conclusion that Julbo is the only company that takes Category 4 glasses seriously. I initially tried on the Julbo Explorers, but with a wide head, they did not fit. The Micropores have a much more flexible temple piece allowing for a better fit for wider heads. The ends of the temple pieces are extremely flexible allowing you to customize them to your desired fit and can lock the sunglasses onto your head well. If you are used to having peripheral vision while wearing sunglasses, these will take a while to get used to, but after a few days of use the side shields will disappear. The side shields block almost all peripheral light although you will notice a few small points of light if you look to the side (not to the point of being distracting or annoying). I was surprised that these have a slight brown tint to them, as I do not recall seeing any details about a tint. It makes greens stand out very well and seems to help in harsh sunlight. As with the side shields it may seem odd at first, but then you no longer notice it. A colleague has a 30-year-old pair of Julbo glacier glasses, which made me confident that the mineral lenses will stand the abuse that I will put them through in the coming years (hopefully decades). I just got back from hiking above timberline in New Mexico in July and I am completely hooked on these sunglasses.

Better than expected!
These sunglasses looked great on the website. They are much better than I expected. Very much exceed my expectations. They will be a part of my mandatory gear for any outings, expecially on bright and windy days.

Micropore Arc 4+
I used these in Colorado in bright sun and found them to be very adequate. They are constructed well and have enough adjustablility in the nose piece to fit any nose on the planet. I recommend going to an optical shop to have them adjust both sides of the nose piece for width as well as angle. While you are there ask them to adjust the temple hinges to your liking via the screw in the hinge. I liked the light blockage on the sides and bottom. There is some light allowed from the top but no more than other glasses of this genre. It can be minimized by adjusting the nose pieces for a slightly higher position on the nose, i.e. further up the bridge of your nose. I would highly recommend this product for quality and price.

Best Investment Ever
I have tried several cat.4 glasses before, and nothing compares to my new Alti Arc from Julbo. I like the idea of flexible frame at the ear area which holds it securely. The leather is nice touch and yet functional.

Great for the Trail
I love these glasses and would highly recommend them for your outdoor adventures. They are great for total block out and don't fog easily. You will love them!