Julbo Ultimate REACTIV 0-3 High Contrast – Maximum Vision from Dawn to Daylight

Julbo Ultimate J5464145 is engineered for athletes who train in constantly changing light conditions. Whether you're starting before sunrise, riding through forests or finishing under bright afternoon sunshine, the latest REACTIV 0-3 High Contrast photochromic lens automatically adapts to deliver crystal-clear vision and excellent visual comfort.

With an exceptionally wide visible light transmission range of 15–87%, the lens performs in almost every lighting condition. High Contrast technology enhances terrain definition, improves depth perception and helps riders and runners detect obstacles more quickly while reducing eye fatigue. :contentReference[oaicite:0]{index=0}

Main Features

• REACTIV 0-3 High Contrast photochromic lens.
• Automatic light adaptation (15–87% VLT).
• Enhanced terrain contrast and depth perception.
• 100% UVA, UVB and UVC protection.
• Panoramic shield lens.
• Full Venting ventilation system reduces fogging.
• CustomFIT adjustable temples.
• Grip Tech temples for secure comfort.
• 3D Fit Nose fully adjustable nose bridge.
• Comfort Fit with Helmet.
• Cord attachment compatible.
• Lightweight bio-based Rilsan® frame.

Technical Specifications

• Brand: Julbo
• Model: Ultimate
• Product Reference: J5464145
• Frame Colour: Dark Grey / Army Green
• Lens: REACTIV 0-3 High Contrast Photochromic
• Lens Category: 0–3
• Visible Light Transmission (VLT): 15–87%
• 100% UV Protection
• Panoramic Shield Lens
• Full Venting
• CustomFIT Adjustable Temples
• Grip Tech Temples
• 3D Fit Nose
• Comfort Fit with Helmet
• Cord Attachment
• Bio-based Rilsan® Frame
• Lens Width: 133 mm
• Bridge Width: 14 mm
• Temple Length: 130 mm
• Frame Width: 135 mm
• Base Curve: 6
• Frame Size: Large (L)
• Weight: 27 g

Ideal For

• Road cycling
• Gravel cycling
• Mountain biking (MTB)
• Trail running
• Running
• Cross-country skiing
• Outdoor endurance sports
• Training from dawn to dusk

Why Choose Julbo Ultimate REACTIV 0-3?

The REACTIV 0-3 High Contrast lens is one of Julbo's most versatile photochromic technologies. It becomes almost transparent in very low light and automatically darkens as sunlight increases, eliminating the need to switch eyewear throughout the day. Combined with CustomFIT temples, the adjustable 3D Fit Nose and the lightweight frame, the Ultimate delivers exceptional comfort, stability and optical performance. :contentReference[oaicite:1]{index=1}

When Should You Choose This Model?

If you regularly train in changing light conditions—from early morning and forest trails to bright midday sun—and want one pair of premium photochromic sunglasses for cycling, MTB, gravel riding and trail running, the Julbo Ultimate REACTIV 0-3 High Contrast is one of the most versatile performance models available.

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