Merino Sun Hoodie

Sale price$130.00 USD

Only 2 units left
Color: Squash
Size: SM
Sizing: Smartwool Men's Apparel

Smartwool Men's Apparel Sizing

Size Chest Waist Hip Arm Length Inseam
S 36"-38"91.5-96.5cm 29"-31"73.5-78.5cm 36"-38"89-96.5cm 31"-32"68.5-81.5cm 30"-31"73.5-78.5cm
M 39"-41"99-104cm 32"-34"81.5-86.5cm 39"-41"99-104cm 32"-33"81.5-84cm 31"-32"78.5-81.5cm
L 42"-44"106.5-112cm 35"-37"89-94cm 42"-44"106.5-112cm 33"-34"84-86.5cm 32"-33"81.5-84cm
XL 45"-48"114.5-122cm 38"-40"96.5-101.5cm 45"-48"114.5-122cm 34"-35"86.5-89cm 33"-34"84-86.5cm
XXL 49"-51"124.5-129.5cm 41"-44"104-112cm 49"-51"124.5-129.5cm 35"-36"89-91.5cm 34"-35"86.5-89cm

The natural shield against the alpine sun.

The Merino Sun Hoodie redefines sun protection for the mountain athlete who prefers natural fibers over synthetic plastics. Designed to offer a cooler, more breathable alternative to traditional polyester sun shirts, it utilizes a lightweight Merino jersey fabric that keeps pure wool next to your skin for superior temperature regulation and odor resistance. Whether you are navigating a glacier in full sun or hiking through the high desert, this hoodie provides UPF 40+ coverage without the clammy feel of synthetic fabrics, ensuring you stay dry and comfortable even when the heat ramps up.

Pickup available at Whittaker Mountaineering

Usually ready in 24 hours

Merino Sun Hoodie

Merino Sun Hoodie

Squash / SM

Whittaker Mountaineering

Pickup available, Usually ready in 24 hours

30027 SR 706 E
Ashford WA 98304
United States

+18002385756
Free Shipping
On orders over $150
Expert Guidance
Real mountain guides, not algorithms
Easy Returns
30 days, no hassle returns
Guide Vetted
Curated by RMI professionals

Diggin' in to Details

Our Take

We stock the Merino Sun Hoodie because it solves the biggest complaint about sun shirts: the "plastic bag" effect. Most UPF shirts are 100% polyester, which can feel sticky and smell terrible after a single day of sweat. Smartwool’s solution uses the natural ability of wool to regulate temperature and resist odors, making this the superior choice for multi-day trips where washing isn't an option. It feels like a premium base layer but acts like armor against the sun.

Our Philosophy

We Simplify Outfitting

Whittaker Mountaineering was born out of the need for RMI to make sure their clients had the appropriate gear to get to the top of Mt. Rainier safely. After decades of trying, reviewing, arguing-over, and recommending gear, we can’t help but know what we’re doing by this point. We know what works, we know what doesn’t, and we use that expertise to stock our store. 

Who are these guys?

Smartwool

Smartwool revolutionized the outdoor industry by introducing the performance benefits of Merino wool to the world of active pursuits. We carry them at Whittaker Mountaineering because they consistently set the standard for active comfort and temperature regulation. Their gear is built to handle the rigors of the mountains while remaining soft enough for days of continuous wear, making them a reliable staple in any climber's kit.

See More From Smartwool
Best For

Summer hiking, glacier travel, high-altitude trekking, and multi-day backpacking trips.

Summits
  • Rainier (Standard Climb)
Activities
  • Mountaineering
  • Hiking
  • Backpacking

What's the diff?

Product Comparison

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Merino Sun Hoodie Sale price$130.00 USD
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Alpenglow Hoody Sale price$109.00 USD
Best For

Summer hiking, glacier travel, high-altitude trekking, and multi-day backpacking trips.

Glacier travel, spring skiing, desert climbing, and fly fishing.

Outdoor travelers seeking lightweight, breathable sun protection during warm-weather missions.

Summits
  • Rainier (Standard Climb)
  • Rainier (Standard Climb)
  • Rainier (Standard Climb)
Activities
  • Mountaineering
  • Hiking
  • Backpacking
  • Mountaineering
  • Hiking
  • Backpacking
  • Ski Mountaineering
  • Mountaineering
  • Hiking
  • Backpacking