DragonWool Zipoff Thermal

FINAL SALE - No Returns On Clearance Products

The DragonWool Zip-Off Thermals are the perfect layer for any adventure. With the moisture-wicking & temperature regulating capabilities built into the thermals along with the soft feel of high quality merino wool against your skin, you won't find a better baselayer for your adventures!

DragonWool dries 4x faster than regular merino wool!

Start "Living Ultralight" by utilizing the DragonWool Zip-Off Thermals and simplifying your gear. Adventures take you from mountain peaks to flying around the world! When you want to focus on where you are, it's important to have versatile, functional gear. Take less and see more with the DragonWool Zip-Off Thermals!

9.4 oz (Size Medium)


NuYarn DragonWool combines patented no-spin merino wool and a jersey-face polyester to create the most advanced performance fabric to be used in a baselayer! Warm when wet, quick drying, odor resistant, and breathable!

Full Length Stretch Zippers allow you to easily put on or remove the thermals without removing your boots, and the stretch zippers allow the thermals to comfortably move with you!

3/4 Length prevents uncomfortable bunching or rubbing while wearing socks and boots!

Flatlock Seams with 0% Overlap mean you get the most comfortable baselayer without feeling any seams rubbing!

Odor Resistant Properties of merino wool helps prevent bacterial buildup and odor, even on multi-day trips!

Dries 4x Faster than merino wool with the synergistic weave of DragonWool combining jersey face polyester with patented merino wool!

Actively Breathable while in motion, allowing you to cool off while working up a sweat!


  • Fabric: DragonWool™
  • Blend: 59% Merino, 31% Polyester, 10% Nylon
  • Fabric Weight: 200 GSM
  • Fit Style: Athletic Cut
  • Color: Charcoal, Blue
  • Zippers: YKK
  • PFAS free

Cleaning: Machine wash cold, use wool wash or mild detergent, air-dry

Layering Collection: Kinetic

Layering Category: Moving Set or Baselayers

Product Care

Your Wool layer is a high performance piece of gear. It needs some extra attention to keep it performing at the highest level.

Please read through the care instructions below to ensure that you care for it properly:

Before Washing

  • Never wash your wool with anything with velcro or similar hook & loop characteristics.
  • Never wash your wool in a washing machine that has an agitator.
  • If your wool layer has a zipper, please zip it up completely to prevent it from snagging during the washing process.
  • If you cannot follow any of these prior instructions you should hand wash your product using the detergent and drying process described below.

The Wash & Dry Process

  1. Use a mild detergent like Dreft (for babies) or Nikwax (for technical gear).
  2. Choose Low Spin or Delicate wash.
  3. Choose Cold Wash & Cold Rinse (add extra rinse if possible).
  4. Hang dry until the product is completely dry.

For more information on caring for your gear please visit https://outdoorvitals.com/pages/care-guide-faq


Nuyarn® Technology

Outdoor vitals uses Nuyarn­­® Technology in all of our merino wool fabrics & apparel. Nuyarn® is a spinning technology that releases the natural performance characteristics of wool fiber that are otherwise twisted out by traditional wool spinning methods. 

Essentially the result is performance products made from natural fibers that can outperform synthetics. 

Nuyarn® can make wook that performs as closely as possible to the way it does in nature, to rival or exceed the performance of synthetic alternatives. 

Types of Spinning

 Ring Spun & Traditional Core Spun techniques compress the natural air pockets in the fiber, create loops, & restrict the natural movement of the fibers -essentially creating a rope-like structure that can be itchy next to skin. 

Nuyarn® does not twist the fibers. Instead it drafts merino fibers along a high performance filament, resulting in 2 ply yarns with much more volume & aeration.  (This 2 ply yarn structure is 35% finer than yarns spun on a conventional ring frame. Combined with the Nuyarn® thermal advantage, this offers the capacity to engineer much lighter, high performance fabrics as a result.)

Benefit Summary

The Nuyarn® method of twist-free spinning allows us to create products that outperform traditional merino wool & synthetics, and offer a natural enhancer to athletic performance. 

  • 5x Faster Drying
  • 85% More Elasticity
  • 120% More Seam Strength
  • 53% More Air Resistant
  • 30% Less Resources Used
  • 8.8x More Durable
  • 35% More Thermal Retention
  • 50% More Burst Strength
  • 25% Less Energy Used


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Customer Reviews

Based on 19 reviews
Art Morgan
DragonWool Zipoff Thermal?

Warm, comfortable and easy to get into.

Timothy Bowstead
Meanwhile 16 days later.....

Still waiting (16 days later). Vitals probably shouldn't email customers asking for a review when they're still waiting after 16 days. Maybe the wagon wheel came off? My review could change once the pony express arrives.

Love them so much I bought second pair.

I'm very happy with this product. I have hunting boots that are cumbersome to get in and out of these are so easy to take off and on. Haven't used them skiing yet but I feel they will provide a real advantages and comfort. I have not noticed any drafting at the zipper.


To cumbersome. Tried different sizes. Good concept but didnt work for me.

Kyle B.
Initial Review and One Weekend Use

I've been looking for thermal pants that have these zippers because taking off everything to remove a layer or add a layer while hiking/backpacking is very annoying and can introduce you to wet socks or dirty feet as well as losing some warmth. The initial packaging and box was very professional and I wasn't quite expecting it at first and thought I had been sent something else that I didn't order. I ordered the gray color and it keeps a good subdued feel while not being another black base layer. The stitching and craftsmanship is very tidy and I had no immediate issues that I could notice. The zippers are positioned at the bottom of the pant which I thought would be annoying but overall was more of a benefit when putting on the pant. With this being a 3/4 design (better for use in my opinion) you don't have to worry about that zipper being in a high boot or getting tangled/tucked into a sock for irritation. Zipping and unzipping the pant was easy enough once you understood how to hold it and match up the ends while standing with your outer layer pants around your ankles. Hiking was comfortable and they regulated temperature well. Sleeping was slightly less comfortable because I'm a side sleeper and I felt the zipper on my leg at one point or another but that's more user error. I wore these for a camping/hiking weekend with temperatures between 50F-20F. Overall if you're looking for a decent base layer, I would make this as a suggestion.