Women's Coefficient Hoody

Logo with the text 'GUIDE PICK' and a bow graphic on a white backgroundGuide Pick™ Product

A lightweight, breathable fleece that bridges the gap between too cold and too warm, with a slim fit that layers cleanly and a hood sized for climbing helmets.

Sale price$199.00 USD

Only 1 unit left
Color: Black
Size: XS
Sizing: Black Diamond Women's Apparel Tops (Jackets & Hoodies)

Black Diamond Women's Apparel Tops Sizing

Size Chest Hip Arm Length
XXS 31 - 32 in 78.5 - 81 cm 32.5 - 34 in 87.5 - 91.5 cm 29.5 in 75 cm
XS 32.5 - 34 in 82.5 - 86.5 cm 34.5 - 36 in 87.5 - 91.5 cm 30 in 76 cm
S 34.5 - 36 in 87.5 - 91.5 cm 36.5 - 38 in 92.5 - 96.5 cm 30.5 in 77.5 cm
M 36.5 - 38.5 in 92.5 - 98 cm 38.5 - 40.5 in 97.5 - 103 cm 31 in 79 cm
L 39 - 41.5 in 99 - 105.5 cm 41 - 43.5 in 104 - 110.5 cm 31.5 in 80 cm
XL 42 - 45 in 106.5 - 114 cm 44 - 47.5 in 111.5 - 120.5 cm 31.5 in 80 cm

The fleece that refuses to overheat.

The Coefficient Hoody is a technical midlayer built to handle the swing from freezing starts to sweaty summits without demanding a layer change. Featuring a moisture wicking fleece material with a gridded interior. With a low-profile, slim, snag-free design, it layers seamlessly under a shell, making it the one piece you put on at the trailhead and keep on until the pub.

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Pickup available at Whittaker Mountaineering

Usually ready in 24 hours

Women's Coefficient Hoody

Women's Coefficient Hoody

Black / XS

Whittaker Mountaineering

Pickup available, Usually ready in 24 hours

30027 SR 706 E
Ashford WA 98304
United States

+18002385756
Guide Pick Product

Diggin' in to Details

Our Take

This is the midlayer that never leaves our pack, or our backs, because it regulates temperature better than almost anything else we’ve worn. The gridded fabric manages the impossible balance of trapping heat while dumping moisture the second you start to sweat. We appreciate the slim, snag-free fit that slides easily under a harness or shell, making it the foundational piece for high-output alpine days.

Guide Pick™
Straight From The Source

Why We Love It
Thomas Skoog

On a breezy alpine morning, the difference between comfortable and miserable is often just one smart layer. The Coefficient Hoody fills that gap better than most. The Polartec Power Dry fleece uses a gridded interior that traps warmth when you are standing still and wicks moisture efficiently once you start moving, so you can put it on at the trailhead and not be wrestling with it an hour later. The slim cut fits cleanly under a shell or over a base layer without bunching, and the under-the-helmet hood means you are not choosing between warmth and your climbing setup. It is not a standalone piece for serious cold, but that is not the point. When the temperature is hovering in that awkward zone and a puffy would be too much, this is the layer that keeps you in the right zone.

“The coefficient hoody is a really nice small increase in insulation. It can perfectly bridge the gap between being too cold or too hot on a breezy morning.”
— Thomas Skoog, RMI Guide

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?

Black Diamond

Black Diamond has been outfitting mountain professionals for decades, building gear that’s tested on real climbs, not just in labs. We carry Black Diamond because their designs consistently deliver dependable performance where it matters most.

See More From Black Diamond
Best For

Best for alpinists and ski mountaineers requiring a technical midlayer that efficiently regulates temperature during high-output approaches and freezing summit pushes.

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

What's the diff?

Product Comparison

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Best For

Best for alpinists and ski mountaineers requiring a technical midlayer that efficiently regulates temperature during high-output approaches and freezing summit pushes.

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