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🧗♂️ Elevate your base layer game—stay warm, dry, and fresh wherever life takes you!
This 100% superfine Merino wool midweight base layer set for men features a long sleeve top and long johns at 250 g/m², delivering superior thermal regulation and moisture management. Included are premium Merino hiking socks valued at $21, completing a versatile, odor-resistant, and itch-free layering system ideal for year-round wear, travel, and outdoor activities. Machine washable and backed by a lifetime warranty, this set combines durability with premium comfort for the modern adventurer.

| ASIN | B09C4W1414 |
| Age Range Description | Adult |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Best Sellers Rank | 9,751 in Fashion ( See Top 100 in Fashion ) 16 in Men's Thermal Sets |
| Brand Name | Merino.tech |
| Care instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Closure Type | Pull On |
| Colour | .250 Charcoal Grey Set |
| Country Of Origin | China |
| Country of origin | China |
| Customer Reviews | 4.6 out of 5 stars 3,464 Reviews |
| Fabric Type | 100% Wool |
| Fit Type | Regular |
| Fit to Size Sentiment | Fits True To Size |
| Garment Size Country | United States |
| Import Designation | Imported |
| Item Type Name | Base Layer Set |
| Manufacturer | Merino.tech |
| Manufacturer Part Number | MST-250 |
| Material Type | Wool |
| Material composition | 100% Wool |
| Model Number | MST-250 |
| Neck Style | Crew Neck |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Season and Collection Year | All |
| Size | S |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Modern/Fitted |
| item-package-quantity | 1 |
P**R
Great set, warm, dry and comfy.
I have two of those in 250 and 320 grade and different shades of blue, so extremely happy to please my OCDs :D Really good fit - both in M fit me well with some room to spare, and I'm usually between S and M in common brands. Had them on on several hikes of various strain and length, and can't fault so far. Keeps me warm, dry and absorbs next to none of body or antiperspirant odour. Perfect buy for layering and honestly the top looks good on it's own if you really need to shed layers. So far they seem to be surviving washing without issues (wool liquids, wool mode, two spin cycles, dry flat on a towel on a rack) so fingers crossed for durability that it holds for a long while. In case you wonder, yes there is actually a weight difference between the grades :D If I recall right there was around 400g difference from 250 to 320 set when I weighted it. I might get one more set just in case for spares if it comes on a good discount :)
P**M
Feeling dry in wet - a high quality base layer
If you never tried merino base layer, you may not know what you are missing! The theory is that when wool is worn directly on the skin with cotton as the second layer, then the moisture migrates into the cotton layer straight through the wool making you feel dry and warm. It is a kind of feeling dry while wet effect. Merino wool is thin and gentle, does not bite, and stays odour-free for long. It is much thinner than usual sweaters and can be worn under a regular size shirt or jeans. This garment is true to size, and is stretchable horizontally, so it is likely to fit well. Its overall quality is quite good. I wore it during the recent blizzard, and it felt nice. The top looks good on its own and can be worn as the only layer for exercise, but they sell merino T-shirts for this. The fabric is not strong enough for wearing a backpack directly over it. It is a gentle fabric, so try to not stain it with eggs, fat, etc., because it can't tolerate strong detergents. Wool also dislikes bleach, high alkalinity substances, hot water (causes shrinking) and rubbing (causes felting). I usually minimise use of detergents, because wool is made of protein covered with fat (lanoline), and you may not want to de-grease that fat. So, just dip it in lukewarm water (25C), possibly with a small amount of wool detergent, or shampoo, or nothing, swish it a bit by hand, and then lay out flat to dry on a large towel. In a couple of hours hang it out, but not on a heater. It dries fast, quicker than cotton. Wool does not contain carbohydrates, like cellulose in cotton, which feed smelly bacteria. Healthy human sweat is composed of water-soluble compounds with added anti-bacterial substances, so washing wool is easy. I am using a merino T-shirt for in-doors exercise as well, but it is a different story.
P**O
Warm with perfect fit
Have this for year now and used it extensively! They are durable and warm. Highly recommended! Excellent value for money.
E**K
Very nice
Good fit works well can't get the discount from the voucher they send in the packet it's only for US and Canada I did try and email no luck with getting any discount, they should tell you that in the add. Shame I would have got more from them 😕
W**R
Merino tech
Bought 2 of these. Followed the sizing guide. They don’t seem true to size. . When put on you could feel the cold. As if the material was been overstretched and opening the fabric up to let the cold draughty air in. So Returned these. And went up a size. Then Bought large, the next size up and now they are super comfy and warm, really love them. And they look good, and hug the body nicely looking to buy another one if they come down in the January sales
C**C
Perfect quality base layers
This is second weight warmth and will be wonderful protection in the winter temperatures. These base layers retain body heat and are perfect. No more freezing in the winter. Allied with Merino socks and beanie I am well insulated and don’t need very heavy outer clothes. Will buy these base layers again.
A**B
These are great!!
I'm really impressed with the feel and quality of workmanship of this set. I have no reason to doubt that they are 100% Merino wool. They certainly feel like they are. The seams and stitching are excellent. I am always in-between sizes. I would say the sizing is easy fit not tight. so a large on me fits, but it is a bit looser than other sets I own. Go a size down if you prefer a "snugger" fit. 320g /M2 is what I purchased. They are warm to wear. But I wouldn't say exceptionally so. However, I am happy with them and they are likely to become my go-to set for really cold conditions. I would but more of any weight from this manufacturer.
M**D
Excellent!
I bought these with quality in mind and I was not disappointed. They are excellent in every way both warm and comfortable. Also with a free pair of merino wool socks as well.
M**E
Warm and fit perfect
These are great. Warm and fit perfect for me. I have 2 sets now.
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
B**L
I measured for my size
I used the measurements the company provided to get my size. I'm 5'9" 160lbs. I bought a small. Fit me perfect. All long johns I've purchased are similar to spandex but not tight. Size small for me fit the same as my others. I can't stress how soft and comfortable these are. These are expensive I know, but these are high quality. I bought the heavy thick ones because I only wear them when I'm outside for long periods in the extreme cold, otherwise I just wear jeans. The free socks are of the same quality as well. Very comfortable. All my work socks are from Darn Tough made from the same material.
M**I
Caldo e confortevole ma non troppo resistente
Dopo circa 5 utilizzi intensi si è formato un piccolo buco nei pantaloni e si sono formati piccoli grumi di fibre sulla superficie. A prescindere da questo l'intimo termico acquistato (250 g/sm) riesce a mantenere calore anche in giornate molto fredde. Ha retto giornate di sci con clima a -15° con sopra solo pile e guscio (giacca e sovrapantalone in gore-tex a 3 strati senza imbottitura). Comunque un ottimo prodotto qualità / prezzo.
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!
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