100% Merino Wool Sentinel Men's S/S Crew - Midweight
100% Merino Wool Sentinel Men's S/S Crew - Midweight
100% Merino Wool Sentinel Men's S/S Crew - Midweight
Minus33 Merino Wool Clothing Sentinel Men's Midweight Wool S/S Crew
Minus33 Merino Wool Clothing Sentinel Men's Midweight Wool S/S Crew
Minus33 Merino Wool Clothing Sentinel Men's Midweight Wool S/S Crew
100% Merino Wool Sentinel Men's S/S Crew - Midweight

100% Merino Wool
Sentinel Men's S/S Crew


Regular price $75.99 Save $-75.99
Shipping calculated at checkout.


The Sentinel is a one of a kind Men's Midweight Short Sleeve Tee. This Merino Wool Tee will insulate and stand guard over your body's core. Use this tee as a base layer during the early morning or as a lone t-shirt when the sun hits you after the summit. The natural odor resistance ability of Merino Wool will allow you and your friends to enjoy the ride home.

  • Fiber Content: 100% Merino Wool
  • Knit: 235 g/m2 Midweight Interlock Knit
  • Microns: 18.5 Micron Fibers
  • UPF Rating: 50+
  • Total Easy Care: Machine Wash and Dry
  • Wool Source: Australia
  • Imported.
  • Neckline: Crew Neck
  • Tagless Label: No Itchy Neck Tags
  • Flat Lock Seams: Prevents Chafing
  • Layer Type: Base Layer, Mid Layer
  • Fit Type: Regular - Standard fit with a little bit of room to breathe, but not too baggy
  • Model Features: The model in black is 5'10 / 150 lbs wearing a medium
  • Runs True to Size - If you like a more athletic, tight fit, try sizing down
  • Weight: Size Large = 10.4 oz. (295 grams)
  • Style #: 704
    • Ideal Seasons: Spring, Fall, Winter
    • Activities: Everyday Wear, Hiking, Camping, Biking, Running, Fishing, Hunting, Snowsports
    • Temperature Recommendations: 30°F to 0°F while active, 30°F to 60°F while inactive - Learn More

    Washing and Drying Instructions - Learn More

    • Turn Inside Out
    • Machine Wash Cold: Gentle cycle with like colors
    • Detergent: Mild or wool-specific
    • Tumble Dry: Low heat
    • Storage: Place in an airtight container when not in use for long periods of time
    • Do NOT Use: Fabric softener or bleach!
      Product Story

      Sentinel [sen-tn-l]

      Sentinel Mountain in Maine’s Baxter State Park has some great views of Katahdin, Doubletop, and the Penscot River. The hike to its summit, at 1,842 feet, is about 3 miles and a relatively easy hike with rewarding views.

      Couple Wearing Minus33 Midweight Merino Wool Base Layer Outfits

      Merino Wool

      Versatile and comfortable, our Merino Wool will always have your back. Designed as a three-season garment, our Midweight works great as either a base or mid layer.

      Midweight Details

      Our Midweight styles have all the same natural qualities as our Lightweight Merino Wool, with greater insulation. Minus33 Merino Wool Clothing is perfect as a base layer for a day on the slopes or as an emergency pullover when a cold front rolls in just before you summit.

      235 g/m2

      Interlock Knit

      18.5 Micron

      100% Merino Wool (Woolverino 85% Merino Wool)
      UPF Rating 50+

      Compare Weights


      Activities: Hiking, Camping, Lifestyle, Snowsports, Hunting, Fishing.

      Seasons: Spring, Fall, Winter.

      High Activity Temperatures: 0°F to 30°F

      Low Activity Temperatures: 30°F to 60°F

      Learn about Layering

      Why Merino Wool?

      Moisture Wicking

      Minus33 Merino Wool regulates the amount of moisture on your skin by absorbing any moisture or sweat on your body. Then, the absorbed moisture evaporates out of the fabric into the atmosphere.


      Merino Wool fibers naturally reject any bacteria in moisture or sweat as it is wicked away, so foot fungus and smelly odor will not be a problem while wearing our products.

      Insulates When Wet

      Wool will absorb up to 30% of its weight in moisture without feeling wet or clammy. If you do get wet, wool will insulate you better than cotton or polyester materials.

      Fire Resistant

      Merino Wool insulates against high temperatures and does not readily catch fire. If it does, it self-extinguishes. When Merino burns, it doesn’t melt and stick to the skin like synthetic fabrics do.

      UV Protection

      Don’t worry about sunburn on a sunny day summiting a peak. Lightweight layers have a UPF rating of 25. Midweight and Expedition have a UPF rating of 50+.


      Merino Wool has a low environmental footprint and naturally returns to the elements. Shear a merino sheep in the morning, and in the afternoon they’re happily nibbling their way towards renewing next season’s clip. 



      Learn More

      Customer Reviews

      Based on 8 reviews
      These work.

      So I work half my day outside. These, hands down, are the best mid weight wool undershirts money can buy. Name the brand I’ve owned it. These get the job done. Can wear two days with no stink. Breathe superbly. Hold up in the wash like a champ. Yes, the sleeves are long. Which is great as I have long arms. In short, these are an actual tool. Part of my work uniform. I depend on base layer warmth. Made like work clothes used to be made. Worth every single dollar I paid for them. If you work outside, and need to keep your core warm, layer up and have these on. Thank you for making dependable work gear. I appreciate it immensely.


      We are super pleased to hear that you are happy and comfortable with your Sentinel Men's Crew. Thanks for the great review!

      -Melinda W.

      Jean Tuller
      nice t; but what's up with the sleeves?

      This is a well-made mid-weight t-shirt, perfect for throwing under a jacket or flannel shirt. Right combo of stretch and softness. Only complaint is the sleeves, which, for a t-shirt, are long and weirdly flappy. Given that this shirt has stretch, the over-sized sleeve is a mystery.

      Thank you for taking the time to leave a review.

      Charles Meneses
      Awesome t-shirt

      I have no complaints, they're great for lounging around the house, for walking outside, for staying warm in cold weather, and even doninating sweat in warmer weather.

      Just get a good wool cleaner for when it does get dirty and dry laying down.


      Thanks for the great review! We are glad that you are happy with your Minus33 T-Shirt. We are also thrilled to see that you enjoy wearing your T-Shirt for different types of activities and temperatures.

      -Melinda W.

      Timothy Mayhew
      My favorite go-to tee!!

      I have been wearing the Minus 33 mid-weight merino wool tee shirt for many years now. It is warm, handles moisture well and is my first layer for the three cooler seasons of the year. In fact, I just purchased three more. My only regret is than it only comes in black. Please, please, please offer this tee in other colors so my wife and friends will stop accusing me of wearing the same shirt everyday.

      Seriously, more colors please!


      We are glad to hear you are happy with your 100% Merino Wool Sentinel Men's S/S Crew - Midweight. We will pass your color suggestion along to our product development team.

      Thank you for taking the time to leave a review!

      -Jeannie T.

      Lucinda Pyne
      Great gift!

      Xmas present for my Maine Guide hubby. Loves this weight. Great base layer and also under flannel shirts for casual wear. Love it!


      Thank you for leaving us a great review on the 100% Merino Wool Midweight Sentinel Men's Short Sleeve Shirt. We are pleased to hear that he is enjoying the fit and weight of this garment! Thank you for choosing Minus33!


      -Steven D

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