Colour: Black Slate
Black Slate

Classic high-altitude sunglasses

Sunski’s Treeline is a medium-large sized frame ideal for high glare conditions, like winter mountaineering, snow sports and alpine climbing. With maximum wrap and great all-round coverage that can be further boosted by inserting the removable magnetic sun shields, they’ll keep your eyes safe and squint-free, even against blinding white snow. High contrast polarised lenses also boost your vision in challenging conditions, while grippy rubber nose pads keep the Treelines in place, ensuring they never slip or slide. Classic looks and a keyhole bridge evoke the golden age of exploration. And like all Sunski shades, they’re sustainably made from Superlight recycled polycarbonate resin

    • Superlight frames are made from strong, light and comfortable recycled polycarbonate resin, created from scrap plastic that would otherwise end up in landfill. Sunski intercept this from the waste stream and reformulate it into their SuperLight resin
    • Polarised tri-acetate cellulose (TAC) lenses block 100% UVA/UVB/UV400 wavelengths and pass the FDA basic impact test
    • High-quality metal hinges for lifetime durability
    • Removable magnetic sun shields for maximum wraparound coverage
    • Grippy rubber pads on the nose bridge ensure your sunglasses stay put when you move your head
    • Supplied with protective microfibre sleeve that is also suitable for cleaning your sunglasses
    • The Treeline is a medium-large sized frame ideal for high glare conditions
    • Wrap & Angle: Maximum
    • Lens Type: Non-Mirrored
    • Lens Tint: Amber
    • Lens VLT: 15%
    • Lens Curvature: Base 6 curve
    • Eye Coverage: Very Good
  • The Treeline is a medium sized frame ideal for high glare conditions.

    • Weight: 28.1 g
    • Wrap & Angle: Maximum
    • Temple Width: 141 mm
    • Bridge Width: 22 mm
    • Lens Width: 50 mm
  • Sunski Treeline Dimensions Overview
    • Frames: 100% Recycled Polycarbonate (Superlight)
    • Lenses: TAC
    • Hinges: Stainless Steel
    • Sustainability Through Longevity - Sunski make their shades the right way, with no shortcuts and the highest attention to detail. Sunski stand behind all of their products and they want you to feel totally confident with your purchase. Your Sunskis are covered under our warranty for as long as you own them. If you break them under normal use, Sunski will fix them or replace them for you.
    • Ethically Sourced Materials - Sunski couldn't find a sustainable material they liked, so they invented their own. SuperLight recycled resin is stronger, lighter, and more comfortable than anything on the market. SuperLight is created from scrap plastic that would otherwise end up in a USA landfill. Sunski intercept this scrap plastic from the waste stream and reformulate it into their SuperLight polycarbonate resin.
    • Supports Eco-Initiatives - Sunski is a member of the One Percent for the Planet, an international non-profit organisation where members contribute at least one percent of their annual sales to environmental causes.
  • US brand Sunski, based in sunny California, do things differently. All their styles are 100% original, designed from scratch at their studio in San Francisco. From the outset they prioritised style, fit, performance, value and sustainability. That means honest pricing, great looking frames, premium polarised lenses, high-quality components and a comfortable fit all day long, without squeezing or pinching. Sunski are so confident you’ll love your shades that they offer a lifetime warranty.

    Maybe most importantly though, the brand also uses their own Superlight recycled polycarbonate resin in all their frames, rescuing scrap plastic from landfill and turning it into sunglasses. Their packaging is also plastic-free. The company is completely carbon neutral and are part of 1% for the Planet, supporting environmental causes year on year.

    TL, DR? Great sunglasses designed for outdoorsy people, made from recycled stuff. Now, go have some fun.

Polarized, great price. Comfy and stylish too.

-Josh, Verified Buyer


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