At the Outdoor Retailers show earlier this year, I spent a lot of time checking out sunglasses from different companies. I came away thinking that setting yourself apart with specific sunglasses is almost as hard as doing it with socks. Most of what makes one pair of sunglasses more expensive than another is pretty subtle until you put them on read the specifications. It’s hard to talk about “features” as much as technological innovations in the lenses and frame types.

So I was drawn to these Julbo Bivouak sunglasses because they do actually have some features to set them apart, plus there’s a bit of double-duty gear action with these. Sunglasses that aren’t wraparound generally don’t protect you from the sunlight coming in through the side. That can be bad for your eyes and your skin—especially since this area of the face is where crow’s feet wrinkles start as you age. If you’re climbing a snowy mountain or skiing, it’s even more of an issue because of the reflective rays.

So the Bivouak sunglasses have these little magnetic shields on the side to block off the area. When you need them, they shield the sides of your eyes from the harmful rays. When you don’t, like in the car, you can just pop off the shields and stow them.

There’s no need to attach Chums or some other kind of cord: there’s one built into the design. The included adjustable cord hooks into small holes at the end of the earpieces. As with the shields, this is removable when you don’t want or need it.

The model I’ve been testing came with a Zebra photchromic lens. I’m a big fan of photochromic lenses that get lighter or darker according to the conditions. I found I could keep these on all the time as I moved through sun and shade, car and parking garage, outside to inside. They fully change from a shade-worthy category 2 to darker category 4 in only 28 seconds. The Zebra lenses also have built-in anti-fog properties, which passed with flying colors when I tested them against some cheapo sunglasses. Going from crisp air conditioning to humid outdoors, plus biking on a foggy morning, these lenses stayed clear. There are small vents built into the top corner too, a feature I’ve always appreciated with Tifosi shades, as this seems to keep my eyes from getting teary when I’m biking downhill or skiing fast.

The Julbo Bivouak sunglasses come in seven colors and three different lenses, with the latter determining the price (list of $120-$190). This is at the high end of Julbo’s range—these are geared to serious climbers, skiers, and mountain bikers more than casual travelers. With the ability to adjust the shields and the cord as needed, however, they can be the only pair you need to carry for a wide range of activities.

See more styles at JulboUSA.com and see more of our Julbo reviews here.

Check Julbo Bivouak sunglasses prices at Campmor