Riding during winter in the Pacific North West, it’s sometimes safer to ride without eye protection than with. When temperatures are just above freezing, humidity is near 100% and you’re only moving a few miles per hour through janky tech, it creates the perfect conditions for condensation to form on the inside of lenses. Regular goggles only remain clear for a few minutes before they turn to “foggles,” which turns your world into a soft, fuzzy place—that is until you completely lose the trail and run into a tree, most of which are neither soft nor fuzzy.

It’s only recently that mountain bike companies have figured out the solution to the fog problem. Taking a hint from snow sports, a few brands now offer dual-pane replacement lenses. One of those few is 100%, and if you scroll down far enough in the mid-tier Accuri line on its website, you’ll come across the Enduro MTB goggles.

The dual-pane lens acts just like a dual-pane window, creating an insulating air pocket. The inside lens stays warm enough to be above the dew point, so no fog forms.

No, these goggles don’t come with a fanny pack, and they sadly aren’t half-shell specific,  but they do come with a dual-pane clear lens installed in the regular Accuri frames. For $60, you’re paying $15 extra over the regular Accuri with a clear lens, but you more than get that value back by, well, being able to avoid trees. Bike parts and medical bills are expensive.

I’ll put it this way, the only time the Enduros have fogged on me is when I was hike-a-biking through a slushy forest, at night, uphill, in the rain and after a long climb (and no, it was not on my way to school). In those conditions, even a space-heater would  fog up. And as soon as I dropped into the descent and got some air flow, the Enduros cleared right up. On that point, I’ve never had them even hint at fogging while I was actually moving, and even during trail-side breaks they only began to the slightest hint of condensation at the corners.

The three layers of foam are comfortable against the skin, and a thin frame is flexible enough to conform to various face topographies.

On more than one occasion, I’ve left the Enduros on for short climbs (around five minutes) without any issues. Longer climbs will probably be more than they can handle, depending on the humidity, temperature and how hard you’re working. However, once temps go above 50-degrees I was hard-pressed to make any fog at all.

One thing to note is that the Enduros need to be up to temperature to resist fogging. When you first pull them out of the bag, the inside lens is still cold, and if I’m using my science terms correctly, this causes water vapor to condense on it as the lens’s temperature is lower than the dew point. Once your body heat warms up the inside lens (which is thermally protected by the air gap between the lenses) it raises above the dew point and, boom, no more fog.

This “warm-up” period is also where a good anti-fog coating comes into play. The anti-fog coating is doing most of the work inside. Luckily, 100% applies an excellent coating which soaks up moisture nicely, will take a couple months of hard riding to degrade. When it finally does wear off (or you smear it), apply a fresh coat of Cat Crap (I’m not joking, that’s a real company) and you’ll be set for another few months of riding.

The goggles are vented all the way around, with a nice gap between your face and the lens, which helps ventilation.

The Enduros carry over all the regular features of the Accuri line, including the universal lens mounting that 100% uses on all of its adult goggles. If you want tear-offs, not only do the Enduros have posts but they use the same ones as the rest of the line. Want to switch to a dark-tint lens for the summer? No problem, slap ’em in.

The Accuri frames have a large cutout at the top of the frame to increase visibility, and while I haven’t noticed this while riding, I think that’s exactly the point. The three-layer foam is comfortable and soaks up sweat well without turning into a sponge. The frames are flexible enough to conform to my face without feeling floppy, and they all but disappear while riding. If the goggles do end up having to perform heavy-duty protection (say, you smash your face into one of those non-fuzzy trees), the frame and lens are stiff enough to provide some degree of protection, and the interface is tight enough that the lens won’t pop out. If fact, they’re solid enough that you will probably break before the Enduros do. Of course, this isn’t something I’ve ever tested. That would be ridiculous.

My only complaint has been that the strap tends to loosen up over time and requires adjusting to keep tension. However, the large silicon strip has kept the strap from slipping, even when I’ve forgotten to tighten things back up before a rough descent.

The silicone band keeps the strap from slipping, but the adjuster does like to slip and loosen whenever you take the google off.

In addition to the Accuri Enduro, 100% offers an Accuri Forecast model with rolling film for the muddiest conditions, and you can purchase a dual-pane lens for that system as well if you want the ultimate wet-weather setup. You can also just buy the dual-pane lens for the Accuri (or any 100% frame) if you already run a pair of their goggles.

Goggles are supposed to improve your vision, and in cold, humid conditions a lot of them fail miserably at that. In fact, for most of my life I chose to ride without goggles because I could see better blinking through mud than trying to peer through a personal sauna. While the former only led to discomfort, the latter usually led to places I didn’t want to go, literally. While you do have to submit to purchasing a piece of equipment that, without a hit of irony, is labeled “Enduro,” the Accuri Enduro goggles work as advertised. Foggles be gone, but be warned, if you hit any trees wearing the Enduros, it will have been your own fault.

Learn more about the 100% Accuri Enduro here.