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🧗♂️ Stay warm, dry, and fresh—your ultimate base layer upgrade awaits!
This 100% superfine Merino wool midweight base layer set for men features a 250 g/m² fabric that delivers superior thermal regulation, moisture-wicking, and odor resistance. Designed with a slim, stretchy fit and long torso for all-day comfort and durability, it includes a free pair of Merino wool hiking socks. Perfect for outdoor professionals and enthusiasts seeking reliable warmth and breathability in extreme conditions.







































| ASIN | B09C4WYPYP |
| Age Range Description | Adult |
| Apparel Closure Type | Pull On |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Best Sellers Rank | #13,127 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #3 in Men's Base Layers |
| Brand Name | Merino.tech |
| Care instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Collection Name | All |
| Color | . 250 Black |
| Customer Reviews | 4.6 out of 5 stars 3,330 Reviews |
| Fabric Type | 100% Superfine Merino Wool |
| Fabric type | 100% Superfine Merino Wool |
| Fit Type | Slim |
| Fit to Size Sentiment | Fits True To Size |
| Garment Size Country | United States |
| Import Designation | Imported |
| Item Type Name | Base Layer Set |
| Manufacturer Part Number | MST-250 |
| Material Type | 100% Superfine Merino Wool |
| Neck Style | Crew Neck |
| Number of Items | 1 |
| Origin | Imported |
| Package Quantity | 1 |
| Pattern | Solid |
| Product Care Instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Size | Small |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Modern |
| Style Number | MST-250 |
A**R
My go-to long Johns
Excellent long Johns! These are cozy and warm. Snug and great fitting but breathable and moisture wicking. The merino wool is soft and not itchy. I think the mid weight is ideal for almost any outdoor activity as a base layer. Wear these hunting, hiking, skiing, ice fishing, under your waders, under snowmobile suit, under cover alls. If you live or work outdoors, these are for you. Well made. Great quality. Accurate sizing. Good value.
M**H
Even a Sasquatch would like these
Bought this as gift for my skeptical Salt of the Earth Hubs who was not aware yet of the true superiority that is merino. His face dropped and I had to put his chin back into place when he asked How Much. I was utterly unfazed and ignored his protest. I easily got past his merino gear green inexperience and told him to ‘just try them because these will change your life’ with a grin. To put it short and sweet: He proceeded to basically only take them off to wash over the next five months. His only comment, actually Using His Words: he wanted another set. This, so he always had some clean and multiple weights so he could regulate better and choose depending on the weather forecast for the day he’d be out. I noticed his old synthetics were crumpled in the bottom of his gear bags when he’d come home. The merino were always within reach on top, and gasp, folded! High Praise from this man, folks. It should be stated he is THE case for the legitimacy of merino, and these extremely well priced merino sets: he is a heavy equipment operator that works outside on top of mountains in some of the most extreme winter environments on earth and loves it. For you, the reader’s purpose, let’s just agree to put aside the elephant-in-the-room Crazy Factor of that last sentence for now and stick to the underwear. All I can say in his defense is this world takes all types. That’s only important here to mention since he’s not a dude that sits around in it next to a cozy fire all winter sipping from a tea cup. (That’s my job, lol.) This set was put to a legit durability test and in incredibly harsh conditions and stood up. Once prompted for more detail, and translating out of his customary grunts, shrugs and sighs, he said [paraphrasing]: he stopped noticing whether or not his body was cold or hot since he was the perfect temperature all the time and stopped sweating whether in or out of a machine. He didn’t have to wear nearly as many layers in general. He didn’t have to strip ones off or put other ones on depending on where he was and what was happening nearly as much. He stayed warm even when outer gear got wet with frozen sleet driving and he had to move back and forth outside from truck to machine to truck. He wasn’t losing gear and other layers from job sites, trucks, machines or in the snow nearly as much either from stripping off and forgetting. The merino set remained odor free for an entire work cycle between washings so he reused them everyday. They stayed true to fit and didn’t stretch out of shape even wearing for long periods and for multiple days in a row. All day comfort second skin feel. No bunching in the armpits nor crotch. Ordered the 2XL, biggest they offer I think. He’s normally 3XL big and tall, so I wasn’t sure if these would fit but as a first or second layer snug is good. His back and shoulders can be a challenge to find proper fit for and I often tailor his clothes and gear, but these are perfect with long arms and a long torso design to accommodate various sizes and shapes. Spare to tuck in even! Fantastic!: This is important since he sometimes has to do mechanical repair on the fly. On top of a mountain on the machines, before this merino set, his lower back would sometimes come home chaffed and raw from cold exposure from these situations. A red burn from bending over with elements beating on him, not wanting to touch his clothes since his hands and outer gear coated with grease, tucking back is not a desirable option. The winds are basically trying to tear everything off so to have it stay in place and enough fabric to remain tucked in? chef kiss. Going into this next winter season depending on where he is going this year, we’ll get another set at a different weight. He said he wanted that versatility this time.
S**R
Great buy!
Got the set for Iceland. Worked great! Lightweight easy to travel with. Keeps extra warm without bulk. High quality merino wool so no itching. Very happy
A**W
Exceptional Comfort and Performance!
As an outdoor enthusiast who demands the utmost from my gear, the Merino.tech Merino Wool Base Layer Men's Set has truly impressed me with its unparalleled comfort, performance, and versatility. First and foremost, the quality of the Merino wool used in this base layer set is outstanding. The fabric is exceptionally soft against the skin, providing a level of comfort that surpasses traditional base layers. What sets Merino wool apart is its natural temperature-regulating properties, keeping me warm in chilly conditions and cool when the temperature rises – a crucial factor during dynamic outdoor activities. The fit of the base layer set is impeccable. The tailored design ensures a snug yet non-restrictive fit, allowing for a full range of motion during various activities. Whether I'm hiking, skiing, or simply enjoying a brisk walk, this set adapts effortlessly to my movements, providing the perfect foundation for layering. Moisture management is where this base layer truly shines. The Merino wool wicks away sweat and moisture from the body, keeping me dry and comfortable throughout my adventures. Even during intense activities, I never feel clammy or uncomfortable – a testament to the superior breathability of Merino wool. I appreciate the thoughtful details in the design, such as flatlock seams that prevent chafing and a tagless label for added comfort. The durability of the fabric is evident, as the set has held up exceptionally well to repeated wear and wash cycles, maintaining its shape and performance. The versatility of this base layer set is another standout feature. Whether worn as a standalone layer in milder conditions or as a foundation for a more comprehensive layering system in colder weather, the Merino.tech Merino Wool Base Layer Men's Set adapts seamlessly to diverse environments. In conclusion, if you're in search of a base layer set that combines comfort, performance, and versatility, look no further. The Merino.tech Merino Wool Base Layer Men's Set has become my go-to choice for all my outdoor pursuits, and I wholeheartedly recommend it to fellow adventurers seeking the best in quality and functionality. A five-star investment in comfort and performance!
M**R
Working for me
XLG 320 heavyweight blk. Set 6'1" 190 lbs. Winter in the Pacific Northwest has been bitter cold this year, and I wear an assortment of long johns made from various materials, but none made from 100% wool. The fit is loose (not a bunch up under your outer clothing), and the quality of the material and craftsmanship is better than most. The wool material is soft and not itchy; I have no complaints. The 320 heavyweights are thick and have noticeable weight; again, I have no complaints. The versatility of this set is unmatched, allowing me to adapt to any winter activity. I have worn the set for multiple days and nights with temps in the negative degrees, working on equipment, loading firewood, shoveling snow, and operating ATV for extended lengths of time, and have stayed warm through coffee breaks and meals. Typically, when wearing my other sets, I will have to change tops if I take an extended break outside in a nonheated building because I'm soaking wet, and the cold starts setting in. I didn't have a problem with this set. I recommend these over my silk sets since they are better at wicking away moisture and keeping me warm when damp. Hand washing is a pain, so I'll see how things work on the "hand wash" setting on the washing machine. By the way, black shows every dog's hair, lint fuzz, etc., that you can imagine. I give it a 4-star rating for now. I will update you on the durability and longer-term wear in a few months.
G**G
Nice and soft
Very nice and soft not itchy at all. The socks are also very nice alot like the Darn Tuff socks. Can't wait to try them out this winter.
C**L
Nice weight and well made!
My husband actually loves this. Kept him earm on the streets of Wubec in -12C
P**H
Great base layer
I spend a lot of time outdoors in the fall and winter months hunting. This base layer is the best I have used in a long time. It kept me warm all last season and I expect it to do the same this coming season. As a senior citizen staying warm and comfortable outdoors is important to me. This base layer does the trick.
R**C
Rapport qualité prix imbattable
Article reçu dans les temps conforme à la description taille L pour 185m et 70kg impeccable j ai pris un 320g ,super chaud je le test actuellement à 1600m et fait très bien le job .Bon vendeur je conseille avec un très bon rapport qualité prix merci
L**.
Hält was versprochen wird! - Aufpreis Wert
Im Oktober diesen Jahres bin ich 10 Tage zum Wandern nach Norwegen gefahren. Da zu dieser Jahreszeit die Temperaturen dort ziemlich schwanken können (von 2° - 15°) wollte ich mir sicherheitshalber zu meinen ohnehin 34 Pullovern und 112 Jacken zusätzlich noch eine Thermounterwäsche zulegen. Ich habe in der Vergangenheit schonmal welche besessen, jedoch waren das so Billigteile, die eher nach kurzer Zeit ein in sich geschlossenes Ökosystem beherbergten. Nach Recherche und Empfehlungen bin ich auf Merinowolle gestoßen und dachte mir, trotz des vergleichsweise hohen Preis, probier ich mal aus. - Lieferung: Die Ware kam schnell, unbeschädigt und überraschend geruchsneutral bei mir an. - Qualität: Was mir des Öfteren schon nahegelegt wurde, ist, wie sich das Material anfühlt. Dem kann ich nur zustimmen. Ich persönlich empfinde das Material sehr angenehm zu tragen, sodass ich auch darin schlafen würde. Es kratzt nicht und fühlt sich schön weich an. Die Größe passt auch perfekt. (Männlich, 175cm, 78kg, Größe M) - Funktion: Offensichtlich habe ich mir die Unterwäsche gekauft, um nicht ganz so schnell zu frieren, falls es doch mal kälter werden sollte. An fast allen Tagen habe ich sie getragen und war positiv überrascht. Das Material hält gut warm, so dass ich stellenweise leicht angefangen habe zu schwitzen (Ca. 8°, leicht windig, mittlere Wanderroute, Thermounterwäsche+Jogginghose+Sportshirt kurz+Trainingsjacke+ wie üblich, viel zu schwerer Rucksack) und ist dabei nichtmal feucht geworden. Andere haben sich nach einer Weile echt widerlich angefühlt, wenn man was verschwitz feuchtes an einem kalten Tag anhat. Heißt, Atmungsaktivität ist definitiv vorhanden. Ein weiterer positiver Nebeneffekt, ist die langanhaltende Geruchsneutralität. Wir haben zwar überwiegend in Apartments mit Waschmaschinen genächtigt, jedoch konnten wir zeitlich bedingt nur einmal waschen, was zu meinem Glück auch für die Thermounterwäsche gereicht hat. (Trotz fast täglichen Tragens und Schwitzens) - Fazit: Wenn man was Vernünftiges haben will, lohnt es sich etwas tiefer in den Geldbeutel zu greifen. Ob und wie gut andere Hersteller sind, kann ich leider nicht sagen, da dies bisher mein erster Kauf von Merinowolle war. Mit diesem bin ich jedoch zu 100 % zufrieden. Klare Kaufempfehlung!
G**.
Caldo e confortevole, ottimo per freddo vero; attenzione alle taglie
Completo termico in lana merino pensato per tenere caldo: ottimo isolamento e buona gestione dell’umidità, ideale per inverno e attività all’aperto. Punti da controllare: vestibilità e taglia (meglio guardare bene la tabella), e lavaggio (seguire istruzioni per non infeltrire). Se la pelle è molto sensibile, la merino di solito è ok, ma può variare da persona a persona. In generale buon rapporto comfort/calore.
S**N
Quite happy with this product!
I’m quite impressed with this! Very soft and I really like certain accents like the way that the cuffs on the pants and the sleeves taper down to retain some heat better but to fit well either way gloves/boots, to make sure it isn’t in your way, just draped very nicely. The fit is snug, but not tight or restricting at all, and the merino socks are very nice. I’d say overall this isn’t the softest merino wool I’ve ever felt, other luxury dress brand fabrics are softer, but not they aren’t trying to do what this is trying to do, I’m comparing fashion to this technical, earth focused, based layer. And I think it’s soft enough for continued use without any irritation. I cut all the tags off and have gone on two 1.5 hour winter hikes in Canada and have been super comfortable. So far no odour, been great, and I even am enjoying wearing then around the house. Great buy especially for the money!
G**L
mejor de lo esperado
Increíble protección, resistente a humedad y no guarda olores , algunos sitios en internet recomendaban adquirir productos con un porcentaje de material sintético para evitar los olores, sin embargo este producto, 100% merino ha funcionado a la perfección para mantenerme cómodo y protegido del frío. He estado por una hora en un bote en el ártico (tour para ver ballenas) con rachas de viento que han bajado por instantes el termómetro a -30 y sin notar frío, eso sí, con sistema de capas y la opción de 320g, con la de 250 he notado claramente la diferencia, y supongo que sería la ideal para actividades en la nieve, o caminatas por ciudades moderadamente nevadas.
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