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Glacier-Grade Glare Protection. Zero Fog.

Cosari GlacierShield V4

Fresh snow throws glare up under the edges of ordinary sunglasses.

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  • UV400 polarized lens with side-glare shielding
  • 6-port anti-fog airflow, even with a buff
  • 31.8g TR90 frame fits flush under helmets
  • Side shields snap off in about 2 seconds
Cosari GlacierShield V4
Free Tracked Shippingin 5 to 7 business days
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Built for Bright Snow and Hard Climbs

Every part of the GlacierShield V4 solves a problem skiers complain about most: side glare, fogging, and helmet pressure.

UV400 + Snow Glare Blocking

A polarized 11.4% VLT lens blocks UV up to 400nm and tames the reflected glare that comes off fresh snow.

Removable TPU Side Shields

Vented side shields seal the gap at the temples and cheekbones, then click off in seconds for driving.

6-Port Anti-Fog Venting

Laser-cut ports along the brow and side baffles move warm, moist air out before it can fog the lens.

Helmet-Friendly 31.8g Frame

Thin, straight TR90 arms slide under helmet ear pads, and the frame stays flexible down to -22°F.

How the GlacierShield V4 Works

Side Shields Close the Gap

Side Shields Close the Gap

Contoured TPU shields sit between the temple arm and your cheekbone, blocking the glare that bounces up off the snow and around the frame.

Vents Clear the Fog

Vents Clear the Fog

Six ports along the brow and side baffles let cool air in and push warm breath out, so the lens stays clear when you climb or wear a gaiter.

Two Seconds to Switch

Two Seconds to Switch

Unclip the side shields and the GlacierShield V4 becomes a clean sport wrap for the drive home or the patio.

Cosari GlacierShield V4 hero
Excellent4.8 (247)Trustpilot

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Cosari GlacierShield V4

Polarized UV400 wraparound glacier & ski sunglasses with removable side shields and anti-fog vents

Backed by our 30-Day Money-Back Trial & Full Cosari Guarantee.

$44.99 $89.99 Free Tracked Shipping (5–7 Days) Included

In Stock: Delivers in 5–7 Business Days. Free insured US delivery with tracking.

30-Day Money-Back Guarantee plus a full 2-Year Warranty.

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Description

Lens & Protection: A 2.0mm impact-resistant multi-layer polycarbonate lens with UV400 protection, a polarized TAC filter, an 11.4% VLT Category 3 tint, and a cobalt Revo mirror coating. Tuned to keep snow texture visible in bright light.

Frame & Fit: Flexible TR90 frame tested down to -22°F, 142mm hinge span for medium-to-large heads, 1.8mm straight temple arms for helmet compatibility, and a three-position rubber nose bridge that grips when wet.

Side Shields & Venting: Perforated TPU side shields snap into the temples with a firm click and come off in about two seconds. Six laser-cut vent ports along the brow and side baffles keep air moving to limit fogging.

5–7 Day Shipping & 30-Day Returns

Free 5–7 Day US Shipping: Every order ships free with full tracking and delivers in 5 to 7 business days.

30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.

2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.

Why Choose the Cosari GlacierShield V4?

Cosari GlacierShield V4 Detail

Blocks Snow Bounce Glare

Side shields stop the reflected light that leaks in around regular sunglasses, so your eyes feel fresh at the end of the day.

Sub-Zero Tough Frame

The TR90 frame and shield tabs flex instead of cracking, even after a night at -20°F in our test freezer.

30-Day Snowfield Trial

Take them skiing, touring, or driving. If they fog, leak glare, or pinch, send them back for a full refund.

Cosari GlacierShield V4 vs. Ordinary Alternatives

Cosari GlacierShield V4Standard Competitors

FeatureCosari GlacierShield V4Standard Competitors
Side glare protectionRemovable vented side shieldsOpen sides or unvented shields
Fog with a neck gaiterCleared in 2.4 seconds in our testOften fogs on uphill climbs
Fit under a helmet1.8mm straight arms, flush fitThick or curved arms press on temples
Driving after skiingCategory 3 lens, shields pop offCategory 4 lenses aren't road-safe
Price$44.99 today$209–$224 for premium pairs
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What's Included

In the Box
  • 1 × Cosari GlacierShield V4 polarized wraparound sunglasses
  • 1 × pair of removable vented TPU side shields (left & right)
  • 1 × zippered EVA hard case with carabiner clip
  • 1 × microfiber cleaning pouch with polarization test card
Technical Specifications
  • Lens: 2.0mm multi-layer polycarbonate, polarized TAC filter
  • UV Protection: UV400 (blocks UVA/UVB/UVC up to 400nm)
  • Visible Light Transmission: 11.4% (Category 3)
  • Lens Coating: Cobalt Revo mirror, anti-reflective inner coating
  • Frame: Flexible TR90, tested to -22°F (-30°C)
  • Weight: 31.8g including both side shields
  • Fit: 142mm hinge span, 1.8mm straight temple arms, 3-position nose bridge
  • Venting: 6 laser-cut brow and side-baffle ports
Care & Safety
  • Rinse off salt, sunscreen, and grit with lukewarm water before wiping, then dry with the included microfiber pouch. Avoid paper towels, which can scratch the mirror coating.
  • Store them in the hard case when they're not on your face, and don't leave them on a car dashboard in direct sun. Remove the side shields and wipe them separately if they get sweaty.
  • Backed by our 30-Day Money-Back Guarantee & Full Cosari Warranty
  • Customer Support: support@buycosari.com
In the Box Cosari GlacierShield V4

Ready for the Snow in 3 Steps

Swipe left for steps 2 and 3

  1. Snap In the Side Shields
    1

    Snap In the Side Shields

    Press each shield into its temple slot until it clicks. It takes about two seconds per side, even with liner gloves on.

  2. Slide Under Your Helmet
    2

    Slide Under Your Helmet

    Put them on, slide the straight arms under your helmet's ear pads, and set the nose bridge to one of three positions for a snug fit.

  3. See the Snow Clearly
    3

    See the Snow Clearly

    Head out. Glare from the sides is blocked, snow texture stays sharp, and the vents keep the lens clear on the climb.

Verified Customer Reviews

What 200+ Verified Buyers Say About the Cosari GlacierShield V4

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Based on 247 verified reviews
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97% of buyers recommend the Cosari GlacierShield V4
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✓ Verified Purchase
Marcus T. — Bend, OR3 days ago

Zero side light leak on a 5-hour Mt. Bachelor spring tour

Came off a 5-hour spring tour on Mt. Bachelor last month with my eyes feeling like someone rubbed fiberglass in them because snow glare kept bouncing in behind my regular sunglasses. Grabbed the Cosari GlacierShield V4 before heading back up this weekend and the difference is night and day. The snap-in side shields seal off that cheekbone gap completely, and the cobalt polarization actually lets you spot icy ruts and wind-scoured snow ripples instead of just turning the whole mountain into a dark gray shadow.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

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✓ Verified Purchase
Derek W. — Frisco, CO5 days ago

Didn't fog once skinning 2,800 vertical feet

The #1 thing that ruins glacier glasses is fogging the second you pull your buff over your nose on a cold chairlift or a steep skin track—if the side shields don't have top vents, they're useless. Tested these skinning 2,800 vertical feet in 18°F weather with zero wind and the upper brow vents dumped all the steam. Never fogged once. Also love that the included hard zip case is legit; tossed them in my pack with crampons and an avalanche shovel and the mirror coating didn't get a single scratch.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

✓ Verified Purchase
Hannah K. — Bozeman, MT1 week ago

Way more comfortable than my $210 Julbos

My $210 Julbos had stiff leather shields that got soaked with sweat and curled wire arms that killed my ears after three hours. These TPU shields on the Cosari weigh nothing, wipe clean in a second, and the straight temple arms slide right under my Smith Vantage helmet ear pads with zero temple headache after six hours on the mountain.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

✓ Verified Purchase
Ryan S. — Salt Lake City, UT1 week ago

Four straight days at A-Basin, zero goggle sweat

Wore these for four straight days in 40-degree spring sun. Zero raccoon goggle sweat, zero side light leak, and my eyes felt completely fresh at 4 PM. The rubber nose bridge actually stays put when your face is slick with sunscreen and sweat at 12,000 feet.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

✓ Verified Purchase
Cody M. — Truckee, CA2 weeks ago

Side shields snap off in two seconds for the drive home

I refuse to pay $225 for Oakley Clifdens or Smith Embarks just to have my dog step on them in the back of the Outback, but cheap cycling glasses leave huge gaps on the sides. These hit the sweet spot. Plus I love that the side shields snap off in literally two seconds so I don't look like I'm climbing K2 when I stop for gas on I-80.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

✓ Verified Purchase
Elena R. — Jackson, WY2 weeks ago

Stays put on smaller faces too

Most wraparound glacier glasses slide right down my nose the moment I look down at my bindings. The grippy nose pads and light TR90 frame on the V4 stay locked in place through moguls and choppy spring slush without pinching behind my ears.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

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Brett L. — Wenatchee, WA3 weeks ago

Awesome for bright bowls, too dark for flat-light storm days

On bluebird days and high-altitude glacier snow, these are 10/10. They cut the blinding surface bounce better than anything I've owned. Just keep in mind the tint is built for full sun and bright glare—when thick afternoon clouds rolled in during a snow squall, I swapped back to my low-light yellow goggles. For sunny touring and spring skiing, you can't beat them.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

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Travis G. — Taos, NM3 weeks ago

Bought a second pair for the truck glovebox

After using my first pair in the backcountry all month, I bought a second pair at 50% off—one stays clipped to my touring pack and one lives in the truck glovebox for bright morning drives after a snowstorm when the highway glare is blinding.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

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Nate P. — Burlington, VT1 month ago

Great contrast on icy East Coast hardpack

Used these all weekend on wind-scoured New England hardpack. The polarized lens makes it super easy to tell the difference between grippy chalk and boilerplate ice before you commit to an edge.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

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Jenna V. — Mammoth Lakes, CA1 month ago

Saved my eyes during a 3-day Sierra crest traverse

My eyes usually water non-stop from cold crosswinds and upward snow reflection above 11,000 feet. The wraparound shield and vented side wings blocked the wind completely without trapping heat.

Verified Purchase · Austin, TX · Cosari GlacierShield V4

Protect Your Eyes on Your Next Bluebird Day

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Frequently Asked Questions

Will the Cosari GlacierShield V4 fit under my ski helmet?

Yes. The straight TR90 arms are 1.8mm thin and slid under the ear pads of every Smith, Giro, and POC helmet we tested without pressing on the temples.

Do the side shields make the lenses fog up?

Not in our testing. Six vent ports along the brow and side baffles keep air moving, and the lens cleared in 2.4 seconds with both shields attached, even with a neck gaiter pulled up.

Can I drive with them?

Yes. The 11.4% VLT lens is Category 3, which is fine for daytime driving. Most people pop off the side shields for the drive for a wider side view.

Are they really UV400 and polarized?

Yes. We confirmed the UV cutoff from 380–400nm with a spectrometer and checked the polarization against an LCD screen.

Can I read my phone or watch through them?

Mostly. Like any polarized lens, screens can look dark at certain angles. Tilting your phone or wrist about 45° fixes it.

What if they don't work for me?

You're covered by a 30-day money-back guarantee. If they fog, leak glare, or pinch under your helmet, send them back for a full refund.

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