Tern Ultralight Merino Wool Hoodie

New Poly Blend fabric will dry faster & retain shape even better than original nylon fabric blend

The Tern Ultralight Merino Wool Hoodie is engineered for optimal moisture-wicking, comfort, sun protection, and quick-drying performance while managing odor & bacteria buildup. 

  • Moisture Management: Experience excellent moisture-wicking capabilities, allowing the merino wool blend to effectively draw moisture away from your body while retaining its shape exceptionally well. Ideal for both hot weather and as a base layer in cold temperatures. 
  • Comfortable Fit: The athletic fit of the Tern ensures comfort without being tight or restrictive. This design enhances the merino wool's moisture-wicking properties. With no hardware, simplicity reigns, contributing to decreased weight for high activity.
  • Odor and Bacteria Resistance: Benefit from the natural odor-resistant properties of merino wool, making the Tern perfect for travel, running, hiking, and everyday use. The ultralight weight adds to its versatility.
  • Better Shape Retention: the new Poly blend Tern fabric holds its shape exceptionally well for merino wool, even when wet.  It will stretch sufficiently without “bagging out” & becoming shapeless. 
  • Faster Dry Times: the Tern dries faster than typical merino wool blends.  This gives you better performance in high-output activities & will help you regulate your temperature better.

The natural odor resistant & ultralight properties of merino wool make the shirt perfect for travel, running, hiking, and everyday use.

The fit should be athletic, but not tight or restrictive- this allows the merino wool blend to more effectively wick moisture from your body.  There is no hardware, adding to the simplicity and decreasing weight.  The Tern is a high performance piece for high activity.

Whether shielding yourself from the sun on warm days or using it as a base layer for colder temperatures, the Tern Ultralight Merino Wool Hoodie offers unmatched performance. Elevate your outdoor experiences with a shirt that adapts to your lifestyle.


Hoodie (Men's L): 5.4 oz


True Flat-Lock Seams

Raglan Sleeves

Minimal Clean Collar Hood

Excellent Stretch

Moisture Wicking

Bacteria/Odor Resistant

Quick Drying

Athletic Fit for Baselayer or Stand-Alone Layer

Holds Shape (even when wet)

UPF Rating 36+

Farm to fabric RWS (Responsible Wool Standard) certified wool by NuYarn™


  • Fabric Poly Blend: 115 GSM Merino Wool blend - 63% merino (18 micron), 29% polyester, 8% nylon, knit
  • Fabric Original Nylon Blend: 115 GSM Merino Wool blend - 58% merino (18 micron), 42% nylon, knit
  • Fit: Close
  • The Tern hoodie should fit close to skin and fit easily beneath other layers.
  • Gender: Men's sizing

Care: This product is built for ultralight performance, & was not built to withstand abrasion.

Do not wash in a machine that has an agitator. Use mild detergent on a delicate cycle with cold water. Hang dry.

Note: If used with a backpack, some pilling may occur. Pilling will not affect performance, & is not covered under warranty.

Warranty: Outdoor Vitals Performance Promise


Layering Collection: Kinetic

Layering Category: Moving Set or Baselayers

Product Care

Your Tern Ultralight Merino Wool apparel 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 merino wool with anything with velcro or similar hook & loop characteristics.
  • Never wash your merino wool in a washing machine that has an agitator.
  • 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


Lighter Weight, Higher Performance

Compared to traditional merino wool, Nuyarn® wool is:

  • 5x Faster Drying
  • 85% More Elastic
  • 8x More Durable
  • Uses 30% Less Resources

"Twist-Free" Spinning

Made with Nuyarn® Spinning Tehcnology

Nuyarn's proprietary spinning technology produces a much lighter & higher performance wool fabric

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Customer Reviews

Based on 88 reviews
Best Hoodie for Cool Weather

I am a big OV fanboy with a signifigant amount of my gear coming from OV. When they launced this version of the Tern I had plenty of store credit in my account so I figured I'd see how it fit into my system. WOW!!!! I am so impressed at how light and comfortable the hoodie is while still providing the perfect amount of warmth to hold off the chill from cool early mornings or cool late evenings. I do not use it as a base layer because I am not a fan of merino wool against my torso but, as a mid layer for hiking or to stave off the lower tempatures in camp this piece rocks.

My only complaint, AS I HAVE WITH ALL LONG-SLEEVED NON-SHELL LAYERS, is that it does not come with thumb loops or a dropped back. What is up with that? Seriously OV, put thumb loops and a dropped back on all of your long-sleeved non-shell layers...it makes a massive amount of difference in performance.

Hasn’t shown up yet

Shipping is slow? Don’t know if that’s OV’s fault but yeah I’ll review it once I can test it out. Looking forward to having it arrive.

Super fragile and poor customer service

I was super excited to get my hoodie. I love the color and feel of it! I purchased it as a base layer for my upcoming through hike this summer. I wore my tern one time around town running errands and it already has a large snag in the chest. I’m so sad. I immediately contacted their warranty department and sent a photo hoping they would at least contact me. That was over two weeks ago and I still have not heard back. My husband has two of these hoodies and has never had this problem. I know sometimes one item can have a flaw (which I’m assuming was the case with this shirt) and I would have given a great review if someone would have at least reached out to me to remedy the problem.

Josh LaRue
Amazing shirt

This a great sun hoodie. I live in an area that gets very hot, and it has been very comfy hiking and riding in the heat. I also happen to sunburn very easily, and this blocks most of the uv. I've been very happy wearing this and will probably buy another.

I only wish they added a drawstring to the hood to keep it up in high winds! That would make this shirt the goat.

Best hiking shirt!

This has been my go-to shirt for backpacking for about a year. It actually does everything they claim--dries fast, breathes well, super comfy, and extremely lightweight. I recently wore it for five days straight (didn't take it off once, even to sleep), and it hardly smelled at all. The fit is great and I especially love the hood. The hood moves with your head and keeps the bugs and the sun out without being restrictive or annoying. The only minor downside is that there's quite a bit of pilling in the areas under my backpack straps, but it doesn't look like it's about to wear through any time soon. Also, this is certainly not intended for bushwhacking, as it will definitely catch on any sort of thorns or briars. But it's perfect for hiking on trail. If they release one in white, I'll buy one instantly for summertime adventures!