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🧗♂️ Elevate your base layer game — stay warm, dry, and fresh all day, every day!
This 100% superfine Merino wool base layer set for men features a midweight 250 g/m² fabric that expertly regulates body temperature and wicks moisture to keep you dry and odor-free. Designed with a modern, fitted cut for layering without bulk, it includes a bonus pair of Merino hiking socks valued at $21. Perfect for all seasons and activities, this itch-free, breathable thermal underwear set is machine washable, backed by a lifetime warranty, and ideal for professionals and outdoor enthusiasts seeking premium comfort and performance.
























| ASIN | B09C4WCKL9 |
| Age Range Description | Adult |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Best Sellers Rank | 31,553 in Fashion ( See Top 100 in Fashion ) 4 in Men's Thermal Sets |
| Brand Name | Merino.tech |
| Care instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Closure Type | Pull On |
| Colour | .250 Black Set |
| Customer Reviews | 4.6 out of 5 stars 982 Reviews |
| Fabric Type | 100% Wool |
| Fit Type | Regular |
| Fit to Size Sentiment | Fits True To Size |
| Garment Size Country | United States |
| 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 | XL |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Modern/Fitted |
| Unit Count | 3.0 count |
| item-package-quantity | 1 |
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.
L**S
Warm and comfortable.
Seems to be a good quality product. Worn them for a week and they wash well. Also seem to be effective.
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.
M**E
Very comgortable and great quality
Forget the price these items are superb. Comfortable warm and if you get too warm, appear very quick to begin cooling. I went with a slightly larger size and now have two pairs for when one is in the wash. Great product, well made, and impressive. I have two!!
A**R
Well made product!
Well made, and absolutely essential for an Iceland trek!
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
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.
G**E
Good quality stuff 👌
Very good quality garments. Bought these for my husband for the colder months motorcycle rides and he is very happy with them. Washes well and seems to be holding up nicely.
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.
N**A
Not good not bad
Loose and generally not what i expected but it is what it is
M**R
Este conjunto es excelente.
Compre el intermedio de 250 para ponérmelo en casa. Cuando trabajas desde casa, aunque tengas la calefacción es bastante fácil quedarse frío. Este conjunto es suave y mantiene la temperatura del cuerpo de manera constante ni tienes calor ni te quedas frío. Simplemente se está cómodo y fresco. Además costaba lo mismo que otros que son mezcla de lana y acrílico, este siendo 100% merino es una maravilla. Totalmente recomendable
M**R
Ensemble mérinos
Super
Y**K
Super Soft merino wool base layer
Set includes 1x longsleeve, (not mentioned in product title:) 1x pants (!), wool socks. It's 250gm, so a bit thicker- not transparent as lighter merino fabric, super soft, you really can tell it's 17.5 microns. You won't even want to take it off after trying on.
Trustpilot
4 days ago
5 days ago