Density sunglasses in Gray color #color_Gray / White with Spectron 3 lens
#color_Blue / White / Red with Spectron 3 Lens
Density sunglasses in Black/Gray color #color_Black / Gray with REACTIV 1-3 Light Amplifier lens
Density sunglasses detailed information #color_Black / Gray with REACTIV 1-3 Light Amplifier lens
REACTIV 1 to 3 light amplifier lens information #color_Black / Gray with REACTIV 1-3 Light Amplifier lens
#color_Translucent Black / Copper with REACTIV 0-3 High Contrast lens
#color_Translucent Black / Copper with REACTIV 0-3 High Contrast Lens
#color_Translucent Black / Copper with REACTIV 0-3 High Contrast Lens
#color_Translucent Black / Copper with REACTIV 0-3 High Contrast Lens
#color_Black / Black with REACTIV 1-3 High Contrast Lens
REACTIV 1-3 High Contrast Lens Details #color_Black / Black with REACTIV 1-3 High Contrast Lens
#color_Black / Black with REACTIV 1-3 High Contrast Lens
#color_Black / Black with REACTIV 1-3 High Contrast Lens
#color_Blue / White / Red with Spectron 3 Lens
#color_Iridescent Blue / Red with REACTIV 1-3 Light Amplifier Lens
#color_Iridescent Blue / Red with REACTIV 1-3 Light Amplifier Lens
#color_Iridescent Blue / Red with REACTIV 1-3 Light Amplifier Lens
#color_Iridescent Blue / Red with REACTIV 1-3 Light Amplifier Lens
#color_Translucent Grey / Blue with REACTIV 1-3 Light Amplifier Glare Control Lens
#color_Translucent Grey / Blue with REACTIV 1-3 Light Amplifier Glare Control Lens
#color_Translucent Grey / Blue with REACTIV 1-3 Light Amplifier Glare Control Lens
#color_Translucent Grey / Blue with REACTIV 1-3 Light Amplifier Glare Control Lens
#color_Crystal / Metallic Blue with Spectron 3 lens
Density sunglass features #color_Gray / White with Spectron 3 lens
Spectron 3 lens details #color_Gray / White with Spectron 3 lens
Density sunglasses in white color #color_White / Blue with Spectron 3 HD lens
Density sunglass features #color_White / Blue with Spectron 3 HD lens
Spectron 3 HD lens features #color_White / Blue with Spectron 3 HD lens
Density sunglasses in black color #color_Black with Spectron 3 HD lens
Density sunglass features #color_Black with Spectron 3 HD lens
Spectron 3 hd lens details #color_Black with Spectron 3 HD lens
#color_Density Blaze Spectron 3 HD
Density sunglasses sizing information and what's in the box
Male cyclist wearing a pair of the Julbo Density sunglasses
Woman wearing theJulbo Density in pink

Density

Sale price$179.95
4.6
Rated 4.6 out of 5 stars
53 Reviews
SKU: J5611121
Color: Gray / White with Spectron 3 lens
Color:Gray / White with Spectron 3 lens
Bold. Stylish. Functional. The Density reinvents the rules of performance eyewear with its ultramodern look and unrivaled features. A large cylindrical lens combines with a minimalist frame and moldable CustomFit Temples to offer a precise fit and a light-as-air feel. Enhanced security comes from soft grip inserts on the nose bridge and Grip Tech Temples that won't snag on hair or helmet straps. The wide lens provides an unrestricted field of vision while ventilation above the nose promotes airflow to eliminate fogging. If performance were measured by speed and style, the Density would be King of the Mountain.
  • Comfort Fit with Helmet: Shape, size and features are designed to fit comfortably with any helmet.
  • CustomFIT Temples: Precise temple adjustability guarantees a perfect fit and secure grip.
  • Front Venting: Strategically placed vents increase airflow to prevent fogging.
  • Grip Tech Temples: Rubber touchpoints for a no-slip grip
  • Nose Grip: Flexible, shock-absorbing inserts on the nose bridge increase comfort and grip.
  • Panoramic View: Oversized lens offers a large and unobstructed field of view.
  • 100% UV Protection: Julbo lenses block 100% of UV a, b, & c rays.
Julbo brand benefit icons

Density Fit

 

Size: Large

Sunglass Width (mm): 135

Lens Height (mm): 59

Bridge Distance (mm): 15

Temple Length (mm): 138

Base: 5

Lens Size (mm): 135

Age: Adult

REACTIV photochromic sunglass lenses. The world's most advanced lenses

FAQ

Photochromic lenses adjust to changing light conditions by getting lighter or darker depending on the amount of UV light present. The more UV light—or the brighter the conditions—the darker the lens becomes, and vice versa. REACTIV is the name for our proprietary photochromic technology. 

 REACTIV photochromic technology is helpful when the weather changes, if you're recreating early or late in the day or if you're in and out of the woods frequently. Since the lenses change how light and dark they are, you don't need to switch from one lens to another or take off your sunglasses/goggles as conditions change.

Julbo offers a variety of REACTIV photochromic lenses, which are available in polarized and non-polarized options.

Read more about REACTIV photochromic technology here.

Read more about the benefits of polarized lenses here.

REACTIV lenses are photochromic and adjust to changing light conditions by getting lighter or darker depending on the amount of UV light present. REACTIV lenses are made of NXT (Trivex), which has the clarity of glass and exceptional durability and impact resistance. 

SPECTRON lenses are not photochromic and will not lighten or darken. SPECTRON lenses are made of polycarbonate, which is shatter resistant, and are a versatile lens suitable for all types of activities.

Visible Light Transmission (VLT) refers to the percentage of light that filters through a lens—the higher the number, the more light passes through. A window in a home, for example, might have a VLT of around 70%, allowing most visible light to pass through while filtering enough to keep your sofa from getting bleached. A typical goggle lens, like a home’s window, has a fixed VLT—the amount of light it lets through and blocks out remains the same, no matter how bright or dark it is outside. 

The VLT of Julbo’s REACTIV lenses, on the other hand, changes as ambient light changes. The new REACTIV 0-4 lens, which has the widest VLT range of any photochromic lens on the market, has a range of 83 to 5%. In other words, just 5% of visible light filters through the lens under extremely bright conditions, allowing for ultimate protection. Conversely, 83% of visible light filters through when it's dark out, allowing for total clarity. Regardless of VLT, REACTIV lenses filter 100% of harmful UVA, B, and C light.

High Contrast lenses have a rose tint and rose base color, designed to enhance contrast. HC (rose/red) tints are ideal for situations with varied terrain in low light, for example snowy, flat light or during poor weather. 

Light Amplifier lenses have a yellow tint and yellow base color, designed to brighten everything by increasing light receptivity. LAF (yellow) tints are ideal for darker conditions, like trail running and mountain biking in the woods or recreating early and late in the day. 

Proper cleaning helps prevent damage and extends the life of your lenses. Avoid using solvents, chemical cleaners, paper products, gloves, or anything abrasive, as these can scratch the lens. Scratches are not covered under our lifetime warranty, so be sure to clean and store your eyewear carefully to keep it in top shape.

CLEANING SUNGLASSES

1. Gently wash the frame and lens in soapy water.

2. Rinse the frame and lens thoroughly with clean water.

3. Wipe away moisture with a soft microfiber cloth or non-abrasive material. Let the glasses air-dry.

4. Store glasses in their microfiber case/pouch. Avoid direct sunlight or leaving next to a heat source.

4.6
Rated 4.6 out of 5 stars
Based on 53 reviews
Total 5 star reviews: 43 Total 4 star reviews: 4 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 3
89%would recommend this product
Slide 1 selected
53 reviews
  • JB Profile picture for James B.
    James B.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Built tough.

    good glasses built tough, but easy on your forehead. Wear them all day.

    James Bayne

  • MW
    Michael W.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 days ago
    New Favorite Sunglasses

    I got the Density - Translucent Black / Copper With REACTIV 0-3 High Contrast Lens because I have been looking for a lens that I can run for long days where lighting conditions can vary wildly. I've worn them for mtb and road thus far, and they have been tested because my road ride was cloudy, then kinda drizzly, then clear and sunny. I never felt like I had the wrong glasses for the conditions. They do clearly adjust to the light conditions well. I will say that while the adjustments happen, they are not instant so I found them a little less agile for the mtbing going from dark to light back to dark very quickly. It was always good in the darker areas, but slower to react to quick hits of bright sun. I'll need more testing for that, but on road/gravel they are amazing.

    PROS:

    -crazy light, you'd think they would fly off your face because they don't weigh anything but I've yet to feel them even move around

    -bendable arms to adjust fit

    -they look cool

    -no fogging that I've seen

    -cover my entire field of view

    -flexibility of one pair for an entire epic day out

    CONS:

    -possibly the speed of the lens adjusting to darker/brighter light

  • LA
    Lauren A.
    Verified Buyer
    I do not recommend this product
    Rated 1 out of 5 stars
    2 weeks ago
    Touches the forehead and lets glare in around the lower edges

    I had very much wanted to purchase the Aerolite sunglasses for cycling, but unfortunately they were out of stock. I purchased the Density glasses instead. Unfortunately, the top part of the lens presses against my forehead causing distracting fog. Additionally, the lenses leave a large gap at the bottom which allows for a glare at the lower area of the lenses. Between the fog at the top and the glare at the bottom, vision is comprised.

    I hope the Aerolites will be available soon! I think they would be a better fit.

    Julbo Eyewear
    Yesterday

    Hi Lauren,

    Thank you for your thoughtful review and for giving the Density a try—we really appreciate your feedback and your interest in Julbo performance eyewear.

    We’re sorry to hear the fit of the Density didn’t work out for your needs. Fit can definitely vary depending on facial structure and activity, and it sounds like the Aerolite may be a better match for you, especially given your cycling focus. We completely understand how issues like fogging and glare can impact your experience, and we want you to feel confident in your gear.

    Our team is happy to notify you as soon as the Aerolite is back in stock, or help recommend a model with a similar fit and lens coverage in the meantime. Please feel free to reach out to us at info@julbousa.com — we’d love to help you find the right pair.

    Thanks again for being part of the Julbo community!

    Best regards,
    The Julbo USA Team

  • SA
    Stepanka A.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    Birthday gift

    I bought the sunglasses for my son for his birthday.

    He is a runner and cyclist.

    Loves the sunglasses.

  • LS
    Lynn S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Great glasses

    Love the size— keeps the bugs and pollen out of my eyes. Fit great and I have a small face.