Prometheus Design Werx

Modern Yarns and Heritage Style

The Guide Sweater is a modern classic, directly inspired by classic alpinist and mountaineering styles, but updated and upgraded with extra fine 18.5 micron, machine washable, merino yarns.

Nature's Original Technical Material

The half zip allows for easy core venting and is a substantial 2+ lbs in yarn weight. Merino wool is nature's original technical material, no-melt, no-drip, and insulates when wet.

Reinforced Shoulders and Elbows

Stretch nylon panels on the shoulders and elbows for added durability with give to support your adventures.


Expertly Made in Italy by a Family-Owned Mill

We partnered with a family-owned, fine Italian woolen mill that has been making sweaters for generations. With the grand Dolomites in their backyard, they know a thing or two about mountaineering sweaters.

From Matterhorn to the outpost on Illus, the Guide Sweater is the highest quality, premium, old school, technical mid-layer with timeless styling for those who value ruggedness and fine classic design.

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Product Specs



  • Extra Fine 18.5 Micron Merino Yarns
  • Stretch Nylon Shoulder and Elbow Reinforcement Panels
  • Nylon Spandex Edge Binding
  • YKK Reverse Coil Nylon Zipper



  • Tailored Fit, Best for Athletic Builds *But Not Slim Fit
  • S, M, L, XL, XXL



  • Substantial 2+lbs Yarn Weight *For Size Medium
  • 2x2 Rib Knit
  • Center Front Half Zipper
  • Turn Back Thumb-Hole Cuffs
  • 4-Way Stretch, Nylon Arm and Shoulder Reinforcements
  • Turtleneck Full Height Collar
  • Machine Wash Gentle Cycle Cold, Tumble Dry NO Heat, or Lay Flat to Dry




Customer Reviews

Based on 8 reviews
Michael Braun
Great Sweater

Phenomenal quality in every respect. It can be worn as casual or dress, even with the elbow and shoulder pads. I’m 6’3” with 36” sleeve length, 36” waist and 47” chest and the XL fits like it was tailored for me. I own high end merino sweaters and this one surpasses the others by far. Can’t wait for the black to be back in stock. MB.

High Quality, super impressed

I didn’t know what to expect but I’m super impressed by the Guide Sweater. Medium was almost too small for me but I’m making it work. Quality is superb. It came in handy during the deep freeze. The tall collar zipped up around the neck was clutch for keeping out the biting cold! BRAVO!

L. Racine

Should’ve ordered this before ! Comfortable and resistant. Looks and feel amazing.

Jason Mann

Buy once and cry once. This thing is amazing. Shocked by how comfortable it is as well as the degree of movement it permits. Bombproof

The Real Deal

This is 2 lbs. of quality pullover! Excellent weaving and stands up to the cold on its own. 22 F with a t-shirt and this--no problem! Looks like a million bucks too. Very happy with purchase. Thanks!

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