Julbo Intensity Kilian Jornet – Built for Speed, Designed to Disappear

Julbo Intensity Kilian Jornet J5903460KJ is one of the lightest performance sunglasses in the Julbo collection. Developed in collaboration with world-renowned mountain athlete Kilian Jornet, it is engineered for athletes who demand maximum performance with minimum weight.

The exclusive Kilian Jornet Signature Series features understated earthy tones inspired by Nordic landscapes and reflects Kilian's philosophy that every detail matters during long days in the mountains.

The sunglasses feature the latest REACTIV 1-3 High Contrast photochromic lens, automatically adapting to changing light conditions (13–72% VLT). The High Contrast lens technology improves terrain reading by increasing depth perception and enhancing rocks, roots and trail features for faster, more confident movement. :contentReference[oaicite:0]{index=0}

Main Features

• REACTIV 1-3 High Contrast photochromic lens.
• Automatic light adaptation (13–72% VLT).
• Enhanced contrast and terrain definition.
• Wide panoramic single shield lens.
• Front Venting system reduces fogging.
• Grip Tech temples for secure all-day comfort.
• Grip Nose soft anti-slip nose pad.
• Flexible Slim Temples for improved comfort.
• Comfort Fit with Helmet.
• Ultra-lightweight bio-based Rilsan® frame.
• Exclusive Kilian Jornet Signature Series design.

Technical Specifications

• Brand: Julbo
• Model: Intensity Kilian Jornet
• Product Reference: J5903460KJ
• Frame Colour: Matt Dark Brown / Light Brown
• Lens: REACTIV 1-3 High Contrast Photochromic
• Lens Category: 1–3
• Visible Light Transmission (VLT): 13–72%
• 100% UV Protection
• Panoramic Single Shield Lens
• Front Venting
• Grip Tech Temples
• Grip Nose
• Flexible Slim Temples
• Comfort Fit with Helmet
• Bio-based Rilsan® Frame
• Lens Width: 136 mm
• Bridge Width: 14 mm
• Temple Length: 130 mm
• Frame Size: Medium (M)
• Weight: 19 g

Ideal For

• Trail running
• Mountain running
• Road cycling
• Gravel cycling
• Mountain biking (MTB)
• Cross-country skiing
• Endurance racing
• Outdoor training
• High-intensity sports

Why Choose Julbo Intensity Kilian Jornet?

The Intensity is built for athletes who refuse compromises. Weighing just 19 grams, it almost disappears on your face while offering exceptional stability, maximum ventilation and a panoramic field of vision. The REACTIV 1-3 High Contrast lens continuously adapts to changing light and enhances terrain visibility, helping you react faster whether climbing, descending or riding technical trails.

When Should You Choose This Model?

If you participate in trail running, mountain races, road cycling, gravel riding or MTB and need lightweight eyewear that performs from cloudy mornings to bright afternoon sunshine, the Julbo Intensity Kilian Jornet REACTIV 1-3 High Contrast is one of the best performance sunglasses in the Julbo range.

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