INTENSITY REACTIV
Lightweight and ventilated sunglasses with enhanced grip, perfect for cycling and trail running with high-performance lenses


Sunglasses equipped with the REACTIV 1-3 Light Amplifier lens are built to perform when light conditions are constantly changing. Photochromic (cat. 1 to 3), it automatically adjusts its tint from low light up to full sun (cat. 3). Light Amplifier technology enhances visual clarity and brightens your field of vision to maintain precision as light fades. Ideal for cycling, trail running, and outdoor activities in variable conditions, it delivers 100% UV protection and high-performance vision from start to finish.
14 products
Lightweight and ventilated sunglasses with enhanced grip, perfect for cycling and trail running with high-performance lenses


Performance sunglasses for sports


Sunglasses for speed sports


Ultra-light wraparound sunglasses, ideal for running, riding, or skiing


Sunglasses for speed sports


Technical sunglasses with front ventilation, perfect hold, and prescription-ready.


Multipurpose sunglasses for all outdoor sports


Versatile sunglasses designed to keep up with your active lifestyle, whether you need prescription lenses or not


Sunglasses for endurance sports


Multipurpose sunglasses for all outdoor sports


Performance sunglasses with an ultra-thin design


Ultra-light, streamlined sunglasses designed for narrow faces seeking performance


Multipurpose men's sunglasses for all outdoor sports


Children's sunglasses | 8-12 years


Photochromic sunglasses feature lenses that can automatically change tint depending on ambient light intensity. These intelligent lenses are engineered with special molecules that react to ultraviolet (UV) rays from the sun. The more UV exposure there is, the darker the lenses become, and vice versa.
The principle behind photochromic sunglasses is based on a chemical reaction involving photochromic molecules embedded within or applied to the surface of the lens. When exposed to UV rays, these molecules change structure, causing the lens to darken. Once UV exposure is reduced or absent, for example, when you move indoors or at the end of the day, the molecules return to their original state and the lens becomes lighter again.
One of the key advantages of photochromic sunglasses is their automatic adaptation to changing light conditions. This provides continuous protection against light and UV rays, while eliminating the need to switch glasses or lenses depending on brightness. Whether you're in full sun or in the shade, photochromic sunglasses guarantee optimal vision and the right level of protection.
The world of sunglasses is experiencing a revolution: photochromic lenses. With Julbo’s exclusive REACTIV technology, discover an unparalleled visual experience in all weather conditions:
With NTS technology (Non Temperature Sensitive), REACTIV lenses adapt independently of temperature. At Julbo, we constantly push the boundaries of innovation for your comfort.
At the heart of Julbo’s brand promise lies the perfect fusion of advanced technology and exceptional craftsmanship. Discover the technical features that make our photochromic sunglasses incomparable.
Choose between polycarbonate and Trivex. While polycarbonate stands out for its lightweight construction and durability, Trivex delivers unmatched optical clarity, combining thinness with outstanding impact resistance.
Our lenses are categorized to suit both extreme and moderate light conditions. Visible Light Transmission (VLT) is a key indicator, ensuring the right level of protection for every environment.
Each Julbo lens benefits from premium treatments designed to enhance your experience. The anti-reflective coating eliminates visual distractions, while the flash coating provides a striking mirror effect. Our lenses are also treated with an anti-fog coating for consistently clear vision, and an oleophobic coating to prevent smudges and make cleaning easier.
At Julbo, innovation is everywhere. Integrated ventilation prevents fog formation, ensuring uninterrupted clarity. Grip Nose guarantees a secure hold, even in the most demanding situations. And our Grip Tech temples deliver exceptional comfort, adapting to all face shapes while ensuring optimal stability.
With Julbo, every detail matters. It is this uncompromising attention to detail that positions us as a leader in the world of photochromic eyewear. Choosing Julbo means choosing the perfect alliance of protection and performance.
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