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🌿 Elevate your base layer game—comfort, performance, and style in one set!
This 100% Merino Wool Midweight Base Layer Set for men includes a long sleeve top, long johns (250 g/m²), and premium Merino wool hiking socks. Engineered for superior softness, moisture-wicking, odor resistance, and thermoregulation, it’s perfect for year-round wear, outdoor adventures, and everyday comfort. Durable, easy-care, and backed by a lifetime warranty, it’s the ultimate upgrade from cotton thermals.

| ASIN | B09C4VJSHG |
| Age Range Description | Adult |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Best Sellers Rank | 7,802 in Fashion ( See Top 100 in Fashion ) 22 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 3,471 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 | XXL |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Modern/Fitted |
| Unit Count | 2.0 count |
| 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.
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
E**N
Aus meiner Sicht hervorragend
Diese Merino Unterwäsche war primär zum wandern im Herbst/Winter gedacht und hat sich die letzten vier Monate maximal bewährt. Hervorragende Materialqualität und Verarbeitung, angenehm zu tragen, warm und dabei temperaturausgleichend. Das alles zu einem durchaus attraktiven Preis. Der Artikel fällt relativ groß aus, ist in der zugedachten Größe daher nicht eng anliegend geschnitten. Das tut der Funktion aber keinen Abbruch, im Gegenteil, es hilft die Wärme zu halten ohne ein Strumpfhosengefühl zu bekommen. Die Geruchsbildung war auch nach einigen Mehrtagestrips nur minimal. Nach mehreren Wäschen im Wollprogramm bis jetzt keinerlei Form und Funktionsverlust erkennbar. Ich hatte über die Jahre schon einige Wollunterwäsche verschiedener Hersteller im Einsatz und das ist für mich die bisher Beste. Daher eine klare Empfehlung.
R**T
Jeden Euro wert!
Habe sie in L genommen, dadurch sitzt sie nicht so eng. Ich trage sie im Wesentlichen zum Motorradfahren, aber auch zum Wandern. Das Material ist sehr angenehm zu tragen und kratzt nicht. Ich wasche sie in einem Wäschesack ganz normal mit der restlichen Wäsche mit. Bisher nicht verzogen oder sonst ein Problem und sie trocknet über Nacht. Selbst die dünne Variante hält angenehm warm um die Jahreszeit. Update: habe mir jetzt für den Winter das Set auch noch in 250 gekauft und es ist nochmal spürbar wärmer. Ich habe sie mit einem guten Rabatt gekauft, würde sie aber auch so jederzeit wieder kaufen. Auch das Paar Socken als Zugabe ist 100 % Merino und sehr angenehm zu tragen.
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.
C**Y
Amazing!
Warm and soft as silk, served me well if a freezing environment.
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