#color_Black / Black with Spectron 4 lens
Slack cover sunglasses detailed information #color_Black / Black with Spectron 4 lens
#color_Black / Black with Spectron 4 lens
#color_White / Brown with Spectron 3 Polarized lens
Slack cover sunglass detailed information #color_White / Brown with Spectron 3 Polarized lens
#color_White / Brown with Spectron 3 Polarized lens
#color_Blue / Pink with Spectron 4 lens
Slack cover sunglasses detailed information #color_Blue / Pink with Spectron 4 lens
#color_Blue / Pink with Spectron 4 lens
#color_Army / Gray with Spectron 4 Polarized HD lens
Slack cover sunglass information #color_Army / Gray with Spectron 4 Polarized HD lens
#color_Army / Gray with Spectron 4 Polarized HD lens
#color_Black with Spectron 3 lens
Slack cover sunglass information #color_Black with Spectron 3 lens
Spectron 3 lens information #color_Black with Spectron 3 lens
Slack cover size information and what is included in the box
Woman in slack cover
Man wearing slack cover sunglasses

Slack Cover

$99.95
4.6
Rated 4.6 out of 5 stars
11 Reviews
SKU: J5871214
Color:Black / Black with Spectron 4 lens
Julbo brand benefit icons

Slack was already a vibe, but Slack Cover takes it up a notch—or a few thousand feet. These lightweight, super-comfy sunglasses have removable side and bridge shields that transform them from retro-cool to summit-ready in seconds. The bold double-bridge design keeps you looking sharp, while the SPECTRON HD Polarized lens option boosts contrast, amps up color, and cuts eye strain, so you’re comfortable all day long. Whether you’re hitting high-altitude trails or just rocking the vintage look, Slack Cover has your back—and your eyes.

  • Removable Protection: Easily customize your Slack with removable bridge and side shields making them the most protective and customizable sunglasses on the market.
  • Grip Tech Temples: Soft, rubberized temples offer comfort and perfect grip.
  • Curved Temples: Ergonomic profile is comfortable on the face and grips the head.
  • Bio-Sourced Rilsan: Made with materials derived from castor beans, this frame is lighter, stronger and more environmentally friendly than frames made of traditional plastic.
  • 100% UV Protection: Julbo lenses block 100% of UV a, b, & c rays.

Slack Fit

 

Size: Large

Sunglass Width (mm):  138

Lens Height (mm): 45

Bridge Distance (mm): 20

Temple Length (mm): 135

Base: 6

Lens Width (mm): 52

Age: Adult

Weight: 22 g
Ward sunglasses on a table with a short description of the Julbo Spectron sunglasses
Ward sunglasses on a table with a short description of the Julbo Spectron sunglasses
Slack Cover Glacier Sunglasses

Removable Protection

Easily customize your Slack with removable bridge and side shields making them the most protective and customizable sunglasses on the market.

Grip Tech Temples

Soft, rubberized temples offer comfort and perfect grip.

Curved Temples

Ergonomic profile is comfortable on the face and grips the head.

4.6
Rated 4.6 out of 5 stars
Based on 11 reviews
Total 5 star reviews: 8 Total 4 star reviews: 2 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
91%would recommend this product
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11 reviews
  • JR
    Jesse R.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    14 seconds ago
    Great coverage

    I like the fit, coverage and weight of these shades. I wore them while teaching a mountaineering course in the Rockies. The Julbo Slack Cover provided exceptional coverage in the bright, snowy environment. Julbo also had great customer service when I needed them to change my order last minute. Two thumbs up to the crew at Julbo

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  • JC
    Jordan C.
    Verified Reviewer
    I recommend this product
    Rated 5 out of 5 stars
    4 weeks ago
    Favorite New Sunglasses

    The Slack Cover is my go-to for everything from hiking to skiing. The removable bridge and side shields make them ultra-adaptable, and the Grip Tech temples ensure they never slip. I also love that they’re made from bio-sourced materials—sustainable and high-performance!

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  • JT
    Jim T.
    Verified Reviewer
    Rated 3 out of 5 stars
    4 weeks ago
    Great protection, but side shields feel loose

    The removable shields are a great idea for added protection, but I found them a bit loose after repeated use. The Grip Tech temples keep the sunglasses secure, which is great, but I wish the shields locked in a little more firmly.

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    Julbo Eyewear
    3 weeks ago

    Hi Jim,

    Thank you for taking the time to share your feedback. We're sorry to hear that you're experiencing issues with the side shields on your Slack Cover sunglasses.

    We want to make sure you have the best experience with our products, so we encourage you to reach out to our Customer Service team at info@julbousa.com. They’ll be happy to assist you and help find the best solution.

    We appreciate your support and look forward to resolving this for you.

    Best regards,
    The Julbo Team

  • CW
    Chad W.
    Verified Reviewer
    I recommend this product
    Rated 5 out of 5 stars
    4 weeks ago
    Customizable & Super Comfy

    I love how I can customize these with the removable side and bridge shields. Whether I’m on a windy trail run or just wearing them casually, I can adapt them to my needs. The Grip Tech temples ensure they stay put, even when I’m sweating. A fantastic all-around pair of sunglasses!

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  • ET
    Elizabeth T.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Love my slacks

    I love my sunglasses. I purchased the color option with orange and they r perfect. I use them in snow conditions and daily drivers. My first trip out in the backcountry of the Adirondacks they did fog up (backcountry skiing Marcy) - I was disappointed. Once I took my first brake at Marcy dam and then continued they never fogged again!

    Absolutely recommend- LOVE THEM!

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