Merino.tech Merino Wool Base Layer - Mens 100% Merino Wool Long Sleeve Thermal Shirts Heavyweight, Midweight, Lite with Socks

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!!!!

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.

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.

5/6/26 update This company has incredible customer service. I am updating my rating from 3 stars to 4 stars. In addition, I forgot to mention in my original review, when you purchase a garment from this company, like a shirt, they include a free gift, like a pair of socks. A pair of 100% merino socks, for free ! I feel like this company really does try to make their customers happy. 4/27/26 Summary: It is a great shirt, but is not very durable. Develops fabric runs only after about 6 month. It is actually 3 months, considering I wear it only half the time. I really like this shirt. It is light enough to wear most times of the year and it has all the wonderful qualities for which merino wool is loved: warm, but very breathable, comfortable, protective, and natural. But it develops fabric "runs" all too often. For example, I bought one shirt on September 6th. By October that shirt was exchanged because it developed a run. I had bought a total of two of these shirts, one in late August and another was replaced by early October 2025. And I basically am wearing one of them all the time. When one of them gets dirty, I just swap it for another one. Well, it is 4/27/26, and one of them has developed a run. Actually, this shirt had already been repaired a month or two ago. So from about late August or early October, average to mid September 2025, to about late Feb or March, average that to early March 2026, which is about only 6 month, it had to be mended, and now by late April, it needs mending again. I have to say that despite a great idea/design and very competitive price, the quality is deficient. Because even if it is priced very competitivly, if you only buy it for 6 month, it turns out to cost too much. One might say that it is because of such light design is why it is more fragile. And definitely it is a factor. But I own another merino garment which was bought around the same time, and which gets just as much wear, and it is holding up just fine, so far. So I still think that there is a quality issue with these shirts, and this company.

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.

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!

These are well made, warm and comfortable. I’ve got one of each (light, mid and heavy weight) and have worn them all winter in cold climates. When layered, with the wool against my skin, I stay warm and dry (very effective at wicking). Being wool, of course, requires special care when washing, but it’s worth the extra effort. I’ve worn Carhartt in the past (and still do), but I’m very fond of these shirts.

Got the 250g version and used it for a volcano hike at 0°C (32°F)—kept me warm the whole time. Even after sweating, it didn’t smell and stayed breathable. I bought top and bottom separately for a better fit and the sizing chart was accurate. The bonus socks were amazing too—super cushioned and very useful.

¡¡¡Me encantó!!! Es mejor de lo que esperaba! Todo lo que se menciona es cierto: Se siente increíble, se ve genial, después de un día completo usándola, solo olía a nuevo!! Es perfecta!! Además, incluyeron un par de calcetines que también me encantan!!!... Actualización- Las otras dos playeras que pedí, llegaron sin calcetines y no los envían a México :(; Además la segunda playera que pedí, no parece tener la misma calidad, es más áspera y no parece tener las mismas propiedades

Compré la camiseta de 250 con mangas largas en talla 2XX, y me quedó a la perfección, de hecho la lana no es tan rígida qué puede inclusive quedarle a alguien más grande (aunque es fit, puede quedarte olgado, cómo una talla extra, el pago de las mangas es perfecto para alguien talla 4-5 y el pago de la camisa al frente es más corto qué el la espalda, lo cual s esperado). Super cómoda, proporciona calor y tiene buena transpiración, el color negro es de verdad negro oscuro. Los calcetines con los que llegó de regalo son super suaves y cómodos, con el grueso ideal para usarlos con mis botas Ultra de Salomon. Con el tiempo genera un poco de pelusa la prenda, pero es lo esperado.

The colour and size were correct but cetrtainly not the 250GSM (no indication given in merchandise). From my experience as owner 0f 7 pieces (heavy, medium and light), it is certainly lightweight (160GSM). The only indication is100% Superfine merino wool. Made in P.R.C Reasons for my poor assessment 1. I bought this item with the promise of discount. The seller did not honour the discount 2.Seller choose not to response to my request for either RETURN and REFUND or Just honour the promise of discount and pay me the difference I write to share with future buyers, just be careful. I thank AMAZON for allowing me to amake a claim

Love it. I took the plunge in a Merino.tech t-shirt last summer and I love it. I got this in the winter, mainly for when I'm on my motorbike. It's a top quality item. Very comfortable and warm. When worn over another merino top it's a great combination. I'm sold on merino - it is worth the cost. This is now my go-to brand for all my merino clothing. Oh, you sometimes get free merino socks too. They are also very nice on a motorbike in winter...

J'utilise ce sous-pull Merinos Tech pour mon activité professionnelle, un métier qui demande beaucoup de mouvements et une exposition à des températures variées. Ne connaissant pas le mérinos, je suis satisfait des propriétés de ce vêtement. Points forts techniques : Le rapport entre la finesse du tissu et le confort thermique est efficace. Malgré sa légèreté, il protège bien du froid tout en évacuant l'humidité. J'ai constaté une absence d'odeurs de transpiration après une journée complète d'utilisation, ce qui confirme les propriétés naturelles de la matière. Coupe et ergonomie : Le vêtement est bien long, ce qui est un avantage majeur : il reste bien en place et protège le bas du dos même lorsque je dois me baisser ou m'accroupir de façon répétée. Concernant la taille, notez qu'il taille plutôt grand. Étant entre deux tailles, j'aurais dû choisir la taille en dessous pour un ajustement plus précis. Entretien et livraison : Après un premier lavage, le produit conserve sa forme et ses propriétés. La livraison a été effectuée dans un emballage souple simple, ce qui est tout à fait adapté pour ce type d'équipement technique où l'on cherche l'efficacité avant le packaging de luxe. En conclusion, c'est un produit performant et adapté aux contraintes d'un métier de terrain.