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Merino.tech

100% Merino Wool Base Layer Mens - Long Sleeve Thermal Shirts with Socks

Based on 5,690 reviews
Condition: New
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$58.99
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Availability: Only 5 left in stock, order soon!
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Arrives Wednesday, Oct 28
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At a glance

Condition
New
Size
X-Large
Color
.Black 250
Model
MLS-250
Material
100% Superfine Merino Wool
Fit Type
Regular
Style Name
Modern

Description

10 Reasons Why Merino.tech merino wool shirt men is Perfect for You! 1. Affordable - Replace your cotton with Merino thermal shirts for men without breaking the bank. 2. Four Season Comfort - Merino thermal underwear for men naturally regulates body temperature to keep you comfortable all year round. 3. Perfect for Travel - Merino thermals for men are ideal for multi-day wear, with no odor and comfort in any climate. This ski base layer for men is naturally wrinkle-resistant 4. Easy Care - Washer/dryer safe. Merino thermal long sleeve men for longer lasting wear, hand wash and lay flat to air dry. 5. Zero Worries - Every Merino.tech Merino thermal base layer men is backed by our Merino.tech promise, so you can feel confident and comfortable with every purchase. 6. Ideal for Daily Wear - Enjoy the comfort and performance of merino wool thermal undershirt for men every day - not just trail days. 7. Great for Layering - Merino wool sweater men are fit for layering without bulk. 8. Itch-Free - Ultra soft 100% Merino wool base layer mens provides all day comfort and no itch! 9. UPF 20 Protection - Thermal merino wool underwear men block harmful sun rays. 10. Great for Any Occasion - Merino wool long sleeve men is perfect for the trail, gym, hunting, fishing, skiing, office, or a night out. Order Your Merino Wool Top Now and Say Goodbye to Smelly Tees!

Specs 39

Department mens
Color .Black 250
Fit Type Regular
Style Name Modern
Neck Style Crew Neck
Sleeve Type Long Sleeve
Shirt Form Type Sport Jersey
Sport Type Hiking, Camping and Hiking, Running, Climbing, Snow Skiing, Snowboarding, Mountaineering, Cycling

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

Quality!! BUY NOW!!!!
Size: X-Large Color: .Black 250
I’m extremely satisfied with the Merino.tech Merino Wool Base Layer – Men’s 100% Merino Wool Long Sleeve Thermal Shirt. The material is outstanding — soft, breathable, and genuinely warm without feeling bulky. You can immediately tell it’s high-quality merino wool. The fit is excellent and true to size. It sits comfortably against the skin, layers perfectly under jackets or sweaters, and doesn’t itch like lower-grade wool. The craftsmanship and stitching feel durable and well made. Delivery was fast, and the product arrived exactly as expected. If you need a dependable cold-weather base layer that performs and feels premium, this is a great choice. BUY NOW!!!! ... show more
Reviewed in the United States on February 15, 2026 by T. Jeffries
Light, Warm, and Going Strong for 2 years.
Size: Medium Color: 250 Windsor Blue
The long sleeve shirt is impressively warm for how lightweight it feels, making it ideal for layering without bulk. The fit is a bit loose on my 5'10", 180 lb frame, but still extremely comfortable. And the socks? Bonus points all day—they’re ridiculously comfortable, warm, and well-made. Pros: ✅ Deceptively Warm Shirt – Lightweight feel with heavyweight warmth ✅ Excellent for Layering – Perfect for work or motorcycle rides ✅ Top-Tier Socks – A standout part of the set ✅ Breathable & Soft Merino Wool – Regulates temperature well Cons: ❌ A Bit Loose – Could be more fitted, but still cozy Final Thoughts: This set is a must-have for cold weather, with a shockingly warm shirt and socks that steal the show. Ideal for working outdoors, winter riding, or daily layering. ... show more
Reviewed in the United States on April 30, 2025 by Cyborgladiator
Warm and Durable Through Two Thru-Hikes
Size: Medium Color: .Black 250
I’ve used these as a base layer on multiple backcountry trips, including two multi-month thru-hikes, and they’ve held up really well. They’re warm, comfortable, and have been durable enough for a lot of hard use. They are starting to show some signs of wear now, but after that much time on trail, I think that’s completely reasonable. Overall, I’ve been very happy with the quality. They’ve done exactly what I wanted from a merino base layer and have been a good value for the amount of use I’ve gotten out of them. ... show more
Reviewed in the United States on September 15, 2026 by Mamazonm
Overall, I'm really happy.
Size: Large Color: 320 Army Green
I've been wearing this heavyweight merino wool zip sweater and it's been awesome—especially when that unexpected snowstorm hit. The 100% superfine 17.5-micron merino wool is super soft, never itchy, and doesn’t feel heavy or bulky, even after a full day out. The warmth is impressive, and I love how the wool's moisture-wicking keeps me dry and comfy no matter the conditions. The fit is just right, with no bunching or overheating, which is a big upgrade from regular cotton. The packaging was actually pretty cool, and the included merino hiking socks are a nice extra. My only hesitation is about the care instructions—it says to hand wash and lay flat, but I’m tempted to try the washer to see how it does. I liked my Smartwool sweater before because you could just toss it in the washer, but that was only 81% wool. Overall, I'm really happy with this one! ... show more
Reviewed in the United States on November 13, 2025 by SLF
Fit
Size: Large Color: 250 Deep Teal
I’m a 5’4”, size 14, XL size woman and I prefer to wear 30” tunic length tops. I couldn’t find women’s, merino base layer tunics, in that length for any price! I decided to try a men’s Large and after reading the reviews that stated these shirts are long and reading a review that said the sleeves ran a little short, I ordered this shirt. It is beautiful! It’s butter soft, well made, not scratchy and most importantly it fits! The shoulders and arms are roomy, not baggy. The arm length is a little long on me, as expected, but not too long. The torso length is perfect!!!! It falls just below my hips! It’s kind of snug in the hips, but that’s to be expected in a man’s size and I’m a woman with big hips. I can live with that. I will be ordering a half zip on the same size ASAP! If you’re a medium to large size woman, who prefers tunic length base layers, but can’t find one in women’s sizes, buy this shirt. It’s worth every penny! Well done!!!! Update: I put the sweater through a rinse cycle and reshaped the bottom part it to make it drape around my hips. That worked perfectly! I read a review that stated they thought the sweater had some percentage of spandex. I disagree, because, I would have been unable to reshape the sweater so easily if it contained anything like that. I just wanted to mention that. Thanks for an absolutely amazing piece of clothing! ... show more
Reviewed in the United States on March 4, 2024 by Amazon Customer
Great for cold weather cycling.
Size: Small Color: .Black 250
This is a good quality Merino wool thermal base layer. I used it primarily for cold-weather cycling and it performed extremely well. On a recent ride in 20°F temperatures, it kept me comfortably warm without feeling bulky or restrictive. The material seems high quality, well-made and durable. It has a fine, thin feel without being see-through. The black color also matches pretty much anything, if that matters. The set also includes a pair of wool socks that match the quality of the shirt. They’re warm and well made, though a bit too thick for cycling shoes in my case. They’d probably be great for general winter wear or other cold-weather activities. Sizing runs true to size. If you prefer a race-style clinginess for layering under cycling gear, you may want to consider going one size smaller. Overall, this is an excellent base layer for cold conditions, especially for winter cycling. ... show more
Reviewed in the United States on March 13, 2026 by Amazon Customer
Good quality, keeps you warm.
Size: X-Large Color: 320 Navy
I recently purchased this base layer and I’m honestly very impressed. The material is thick and high quality. You can immediately feel that it’s not cheap or thin like some other base layers. I took it with me on a trip to Armenia where it was snowing heavily and temperatures dropped to -10°C. This base layer kept me warm the entire time. No complaints at all. It fits comfortably, doesn’t itch, and feels great against the skin. It’s warm but still breathable. I even wear it to sleep sometimes because it’s that comfortable. Cold-weather base layer that actually works, this is a great choice. Highly recommend. ... show more
Reviewed in the United States on February 15, 2026 by Artur A.
So happy I purchased this base layer shirt.
Size: Large Color: 250 Cherry Red
My first merino clothing. I hike year round and was having sweating issues in the winter from the layers I wore. I have used this shirt 5 hikes now and no sweating. I’m very happy I got this shirt. I bought a Man’s because I am a Tall Woman. It’s nice and long to my Hips and the sleeve are a great length. I also like the red goes great with my winter jacket. Came with free socks. I tried them yesterday, they are comfortable but didn’t keep my feet warm. But no doubt they will be great when it’s not freezing cold. I will check to see if they have thicker ones for the winter as my other socks cause my feet to sweat in my hiking boots. These thinner socks kept my feet dry. I’m thankful for the free socks. I also bought another shirt in a lighter weight and that one is great as well. Also not itchy. I just ordered the pants which will arrive this week. I’m looking forward to trying them out on a freezing cold morning hike. I’ll do a review on the pants purchase after I wear them. I highly recommend merino, it’s made a huge difference on my winter hike. Wish I knew about this product before. ... show more
Reviewed in the United States on January 5, 2026 by Fairy Angel
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