Product description
Mountaineering Prescription Glasses with Photochromic Polarized Mirrored Lenses
For those who, like DEMON, love the mountains, it's more than just a pastime—it's a true philosophy of life. However, athletes and enthusiasts often face challenges when trying to read essential instruments during hikes or simply navigating their paths.
To address this, DEMON has created Outdoor, a pair of mountaineering prescription glasses featuring photochromic polarized mirrored lenses. These glasses are equipped with Photochromic Category 2-4 polarized lenses and a removable prescription clip that allows you to insert your graduated lenses through your trusted optician.
This innovative prescription eyewear for all mountain sports represents a true revolution. Its wrap-around shape is designed to prevent lateral light entry, ensuring optimal visibility. The wide removable clip offers superior peripheral vision compared to standard clips and significantly reduces the cost of lens graduation. Additionally, its dimensions accommodate bifocal lenses, making it a versatile choice for all your mountain adventures.

Outdoor is the ideal photochromic polarized prescription eyewear for mountaineering, providing top-notch eye protection without compromise. Designed to safeguard your eyes in the most extreme conditions, especially in glare-prone glacier areas and at high altitudes, these glasses are also suitable for regular hiking, trekking, and ski mountaineering, ensuring optimal protection from intense UV rays.
Technical Features and Usage
The mountaineering prescription glasses equipped with photochromic polarized lenses guarantee UV protection and crystal-clear vision with Category 4 anti-shock polycarbonate lenses. The Photochromic Category 2-4 lenses are engineered specifically for mountaineering, adapting dynamically to varying light conditions.

Unlike common photochromic lenses, the 2-4 photochromic lenses start at Category 2 and can reach Category 4 during maximum UV-A and UV-B exposure. The high-quality lenses of our mountaineering glasses will impress you and make every outing unforgettable, as living the mountain is our passion.
The difference between a photochromic 2-4 lens and a standard Category 4 lens lies in how the lens color changes based on your surroundings. While a Category 4 lens is very dark in heavily shaded areas, such as those caused by cliffs or dense forests, it can sometimes be limiting. In contrast, the photochromic lens adapts to UV intensity, remaining clear in shaded areas to ensure optimal visibility of your path and any obstacles. It automatically darkens to Category 4 in bright light conditions, providing perfect vision even in the intense sunlight typical of high-altitude mountain regions, especially on glaciers, while offering excellent comfort.

The polarized lens provides UV protection and goes beyond, as it can concentrate or diverge light rays while attenuating UV-A and UV-B radiation through a polarizing filter that eliminates transverse reflections. These lenses effectively shield against glare and unwanted reflections caused by sunlight reflecting off surfaces such as wet asphalt, water, or metal. Originally designed for fishing sports due to their glare-reducing properties, polarized lenses have since been extended to all types of sports, making them the most relaxing option for the eyes available on the market.
Advantages of polarized lenses include:
- Better contrast perception
- Sharper vision
- No alteration of natural colors
- Elimination of transverse reflections
Polarized lenses are highly effective for mountaineering, especially in intense UV conditions, providing greater eye relaxation even during prolonged use in bright light.
The ultra-light and flexible TR90 frame is our special blend of nylon and carbon fiber, making these mountaineering glasses 20% lighter than conventional materials. This frame is more resistant to accidental impacts and pulls, and it can withstand extreme temperatures—an essential feature for mountaineering, particularly on glacier terrain. The lightweight construction also helps counterbalance the additional weight of prescription lenses fitted in the prescription clip.
Another essential feature is the removable inner sponge made of soft neoprene, which prevents sweat from reaching your eyes during strenuous phases of your journey. It adheres perfectly to your face, blocking light and preventing snow, dirt, and small debris from entering during strong winds.
The temples are designed with a special grip section to prevent annoying micro-slippages towards the tip of the nose during fatigue, vibrations, or sudden head movements. The nose pads and temple tips are made of hypoallergenic, soft, super-light, and anti-slip rubber to significantly enhance the fit.
Included with your photochromic polarized prescription mountaineering glasses are an inner sweat sponge, a prescription clip, an elastic band, and a hard case to best protect your new DEMON glasses.
No compromises, no concessions—maximum performance, always and everywhere.
The dimensions of the prescription clip are as follows: Lens Height: 29mm; Lens Length: 48mm; Lens Base: 6.
Through your trusted optician, you can mount prescription lenses with the following specifications: Maximum Sphere ±8.00 and Cylinder (astigmatism) ±2.00, including bifocal lenses.
The dimensions of the photochromic polarized prescription mountaineering glasses are: Width: 140mm; Height: 42mm; Temple Length: 130mm; Lens Base: 8.

