Category 4 Sunglasses

Sunglasses with black frame and brown lenses on a white background

Treeline Black Bronze Cat 4

~~$98~~$98

Sunglasses with gray frames and dark lenses on a white background

Couloir Storm Silver Cat 4

~~$98~~$98

Black sunglasses with gray lenses on a white background

Tera Black Silver Cat 4

~~$98~~$98

Darker Lenses, Brighter Adventure

Category 4 lenses are engineered for those who like to push the limits.

The beloved Alpine Collection holds a special place in our hearts, but we thought it was time to level up. While the Helio lens is a go to for everyday adventure, we wanted to provide something for those who like to play without boundaries.

Thus our darkest lenses yet. Category 4 lenses allow only half the amount of light to filter through as standard Sunski lenses. Endorsed by the National Ski Patrol, they are engineered for optimal performance in the brightest extreme alpine conditions. Bring your adventures to new elevations.

GEAR FOR TYPE-1 FUN

Sun Shields

Our glacier sunglasses feature side shields for protection against extra glare. We want you to adventure safely and worry free, so throw on your favorite pair and get out there.

Polarized Lenses

Whether on the mountain or the water, our Helio polarized lenses provide superior optical clarity and extreme impact & scratch resistance. We use quality polycarbonate lenses with a scratch resistant coating and 100% UV protection.

Lifetime Warranty

From the slopes to the sand we want you to be confident in your purchase. With lifetime warranty and durable construction, our polarized mountaineering sunglasses are ready for life’s great adventures.