Julbo Shield Kilian Jornet Reactiv 0-4 Cat Sunglasses

In the high mountains, light shifts without warning. Snow glare, deep shadow, or a sudden storm can turn a clear path into a dangerous obstacle. The Julbo Shield Kilian Jornet Reactiv 0-4 sunglasses are engineered for these extremes, with a photochromic lens that spans four protection categories so your eyes are always ready. This signature edition, developed with ultra-runner Kilian Jornet, is a precise tool for athletes who demand uncompromising performance.

Who is it for

Designed for mountaineers, trail runners, and high-altitude sports enthusiasts, this model copes with rapid changes in light intensity. The wrapped shield shape and secure fit keep the lens stable on punishing descents and technical climbs. Whether you are crossing a snowy ridge or moving through shaded valleys, these sunglasses provide reliable coverage and clarity.

Main features

• REACTIV Photochromic Lens 0-4: Automatically adjusts from almost clear (Cat 0) to extremely dark (Cat 4), covering overcast days, bright sun, and intense snow reflection.
• Trivex Lens Material: Impact-resistant and lightweight, offering excellent optical quality without the bulk of traditional glass.
• Grilamid TR90 Frame: A flexible, tough polymer that withstands temperature swings and stays comfortable even during prolonged use.
• 100% UV Protection: Blocks all UVA, UVB, and UVC rays, safeguarding your eyes from solar radiation at altitude.
• Anti-fog, Oil-repellent, Anti-scratch Treatment: Ensures clear vision during intense effort and long-term durability against abrasion and smudges.
• Air Flow Ventilation: Manages heat and moisture, reducing lens fogging in cold or strenuous conditions.
• Grip Tech Temples and Nose Grip: Soft-touch inserts on the temples and nose guarantee a secure grip, even when sweaty.
• Removable Fabric Side Shields: Block wind and peripheral light; easily attached or detached based on exposure.

Specifications

• Lens Protection Category: Cat 0 to 4 (Variable)
• Lens Material: Trivex
• Frame Material: Grilamid TR90
• Base Curve: 6
• Lens Width: 59 mm
• Lens Height: 45 mm
• Bridge Width: 17 mm
• Temple Length: 130 mm
• Special Edition: Kilian Jornet Signature Series

Tips

Photochromic lenses respond to UV light, so on cold but sunny days the tint will be darker. To preserve the anti-fog coating, rinse with fresh water and dry with a soft cloth. The side shields are ideal for exposed ridges, but you may want to remove them when climbing to improve peripheral awareness.