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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 | 23,412 in Fashion ( See Top 100 in Fashion ) 15 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 |
| Customer Reviews | 4.6 out of 5 stars 3,422 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.
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
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 😕
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.
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.
T**V
Good value
Well made using good material, certainly as good as my other more expensive Merino wool base layer. Ordered large and it fits nicely and feels comfortable when hiking or working.
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.
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
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.
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.
D**L
Not sure how they could be better
I bought these for a kayaking trip in the arctic (Svalbard) and they were perfect. I had previously gotten the 1/4 zip mid-weight and I'm not sure how they could be better. They are soft, keep you at just the right temperature and don't keep any odor, even after continuous wearing (sleeping, paddling, hiking, polar bear watch, etc.) for several days. I machine wash on delicate, air dry in the dryer for maybe 30 minutes and then finish drying on a hanger. Worth every penny. Get the charcoal rather than black. It looks awesome.
M**N
Perfekt für Läufe bei Minusgraden – hält extrem warm
Ich nutze das Merino Tech 320 g Set jetzt seit etwa einem Monat täglich für meine Abendläufe. Da es aktuell oft bis zu -6 Grad sind, war der Kauf absolut notwendig. Man merkt sofort, dass es sich um ein schwereres Material handelt, das sich aber extrem weich auf der Haut anfühlt. Nach dem Einlaufen spüre ich die Kälte überhaupt nicht mehr, man kommt sogar eher leicht ins Schwitzen. Mir war besonders wichtig, dass es sich um 100 % Merinowolle handelt und kein Polyester beigemischt wurde. Das zahlt sich aus: Selbst nach dem Sport riecht das Set völlig neutral und nimmt keinen Schweißgeruch an. Ein netter Bonus war, dass dem Paket noch ein Paar kostenlose Merinosocken als Geschenk beilagen. Einziger Minuspunkt: Trotz des hohen Preises treten im Schrittbereich durch die Reibung beim Laufen ziemlich viele Fusseln auf. Das hatte ich in dem Preissegment eigentlich nicht erwartet. Ansonsten ist es aber ein sehr hochwertiges, wenn auch teures Produkt, das sich für echte Winterläufer definitiv lohnt.
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