1. UV Protection and Lens Categories

The importance of UV protection

When you're out in the mountains, exposure to ultraviolet (UV) rays is considerably increased. Ski touring goggles must offer 100% UV protection to prevent long-term eye damage, such as photokeratitis or cataracts. Lenses must be UV400 certified, guaranteeing complete protection against UVA and UVB rays.

Lens categories

Lenses for ski touring goggles are classified into different categories according to their ability to filter visible light:

• Category 0: Clear or slightly tinted lenses, suitable for low-light conditions or night-time outings.
• Category 1: Lightly tinted lenses, ideal for cloudy days or low-light conditions.
• Category 2: Moderately tinted lenses, suitable for moderate light conditions.
• Category 3: Dark lenses, ideal for sunny mountain days.
• Category 4: Very dark lenses, recommended for high altitudes and conditions of strong reverberation, such as on glaciers.

For ski touring, categories 3 and 4 are the most commonly used, offering optimum protection against glare and reflections.

2. Lens types and technologies

Polarized lenses

Polarized lenses are designed to reduce the glare caused by light reflecting off snowy surfaces. They improve contrast and visual clarity, enabling better perception of reliefs and obstacles. This technology is particularly useful on fast descents, where clear, precise vision is essential.

Photochromic lenses

Photochromic lenses automatically adapt to variations in light. They darken in bright light and brighten as the light diminishes. This adaptability is a major asset for touring skiers, who frequently move from shady to sunny environments. Photochromic lenses generally cover categories 1 to 3, or even 4, offering exceptional versatility.

Anti-fog and anti-scratch coatings

Changing weather conditions and physical exertion can cause lenses to fog up. An anti-fog coating is therefore essential to maintain clear vision. What's more, lenses must be scratch-resistant to guarantee their durability, especially during frequent handling and contact with abrasive surfaces.

3. Comfort and fit

Eyewear shape and size

Comfort is an essential criterion for ski touring goggles. The shape of the goggles must fit the contour of your face perfectly to offer optimum protection against wind and snow. Goggles must also be compatible with helmets, without creating unpleasant pressure points.

Frame materials

Frames for ski touring goggles should be lightweight and robust. Materials such as polycarbonate or nylon are commonly used for their impact resistance and flexibility. Adjustable temples and non-slip rubber nose pads improve fit and comfort, even during intense exertion.

Ventilation

Good ventilation is crucial to prevent fogging. Ski touring goggles must be equipped with efficient ventilation systems, allowing sufficient air circulation without compromising protection against the elements.

4. Compatibility with goggles and helmets

Wearing a mask

For touring skiers who prefer to wear a goggle, it is important to choose compatible goggles. Goggles must fit snugly under the mask without creating discomfort or pressure points. Models with thin, flexible temples are generally more suitable for this purpose.

Wearing a helmet

Wearing a helmet is highly recommended for ski touring, especially for off-piste descents. Goggles should be compatible with the helmet, offering full coverage without interfering with the field of vision. Models with adjustable temples and ergonomic nose pads are ideal for ensuring a perfect fit.

The choice of ski touring goggles is a crucial decision for advanced skiers. By taking into account UV protection, lens categories, available technologies, comfort and fit, you can find the ideal pair for your mountain adventures. Don't forget to check compatibility with your other equipment, such as goggles and helmets, for an optimal and safe ski touring experience. With the right goggles, you can make the most of every ascent and descent, safely and with clear vision.