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🧣 Elevate your base layer game—comfort, warmth, and style that never quits!
The Merino.tech 100% Merino Wool Base Layer Women Set features a midweight 250 g/m² superfine 17.5 micron wool fabric designed for superior thermal regulation, moisture management, and odor resistance. This set includes a fitted top, leggings, and premium Merino hiking socks, offering all-day comfort without itchiness. Ideal for active professionals and outdoor enthusiasts, it balances warmth and breathability for year-round wear, backed by a customer satisfaction guarantee.






































| ASIN | B09C4LGKKS |
| Age Range Description | Adult |
| Apparel Closure Type | Pull On |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Best Sellers Rank | #19,356 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #5 in Women's Athletic Base Layers |
| Brand Name | Merino.tech |
| Care instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Collection Name | All |
| Color | .250 Black |
| Customer Reviews | 4.5 out of 5 stars 3,244 Reviews |
| Fabric Type | 100% Superfine Merino Wool |
| Fabric type | 100% Superfine Merino 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 Part Number | WST-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 | Large |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Modern/Fitted |
| Style Number | WST-250 |
A**H
Perfect for so many occasions
This was an awesome deal! I already owned one of these shirts which has served me well through trips to Alaska, and various hiking and travels all around the country. It is my go-to base layer. It looks nice on its own, and absolutely serves its purpose under any type of clothing. It keeps me warm when it’s cold and nice and cool when it’s warmer. The best part is that because of its wool qualities it stays in great shape even between washes! I wore it several different days during a cross country road trip and after setting it out at bedtime, by the next morning it was fresh as new! That is my favorite quality about merino wool! It is soft and not itchy, trim and not bulky, and keeps me warm while still being breathable and never too hot. I am such a fan of this brand and will probably buy even more so I can wear them more on the daily (instead of just as cold weather/hiking/traveling wear). I definitely needed to get another one so I bought this set because what a deal to get not only the shirt and pants but also the hat and socks! All set now! I will note that these do run a bit large. I am usually around a M/L in size, after reading the comments when I bought my first shirt I bought a M and it fit great! It was fitted with a bit of room to spare. When I bought this set, seeing as it comes with bottoms (I am a true L in bottoms) I bought L this time to try it out. It was a bit baggy and quite roomy. Would make for great pajamas! Maybe a little too loose for base layers or on their own. If I were to buy another pair of these I would def size down again and get M for both top and bottom. Overall, I am so happy with this brand and highly recommend!
M**G
A Gift That Truly Made a Difference
I purchased the Merino Tech 100% merino wool thermal sets (320g, charcoal gray) for both my mother and father, and they absolutely love them. Truly—love them. Before this, I had always sent them synthetic thermal underwear (polyester-type fabrics), which were fine, but after discovering Merino Tech, I realized what a huge difference natural merino wool makes. This is a complete game changer. The fabric is incredibly soft, smooth, and gentle on the skin. My parents immediately commented on how comfortable, warm, and luxurious it feels. It’s not itchy at all—just cozy, breathable, and beautifully made. On top of that, the design is stylish and flattering, which is rare for thermal wear. They look good and feel great wearing them. What impressed me just as much was Merino Tech’s outstanding customer service. I had a discount code that I forgot to apply at checkout (which is totally my fault), and most companies would simply say “sorry, we can’t do anything.” But the Merino Tech team was incredibly kind and generous—they honored the discount after the purchase and refunded the difference. That level of integrity and customer care is rare and deeply appreciated. I also love that merino wool is a natural fiber. It feels healthier, more breathable, and more aligned with the body than synthetic materials. You can genuinely feel the quality. I am so happy I chose Merino Tech for my parents. It was a gift that truly made a difference in their daily comfort, and that means everything to me. I highly, highly recommend Merino Tech to anyone looking for premium, natural, and beautifully made thermal wear.
S**E
Comfy and warm
Super comfy and warm. I didn’t find these itchy at all, they were nice and soft.
L**E
A great choice for thin comfortable layers that keep you warm
I don't always write reviews and I really should because I use them. I bought this wool base layer as something to wear for an upcoming trip to Anchorage and Fairbanks, but I've gotten to try it out as my area had a recent snowstorm with single digit F temperatures. This under regular jeans and a thin sweatshirt then my heavy coat made me comfortable outside and slightly overheated shoveling. It's nice and thin, the shirt looks like a regular shirt but the sizing of the leggings on me are a little baggy to look good on their own. They go under jeans really easily so that's not a problem for me. I love that they give a pair of socks with purchase, those are really nice too.
A**W
Great products
These base layer undergarments are decent buy. The warmth is good for under clothing since they are not really too thick. I have only just bought them last month so I am unable to determine the durability as of yet. I have washed them twice according to wool products to preserve their longevity. I believe they will last. I am 5 ft 1 in and 105 lbs and I purchased a medium since I rather have a loose fit on my body and these are just that, looser than too restrictive. I was happily surprised to receive a beanie hat that I am using overnight to stay warmer and a pair of token socks as well for buying there products. I was happily surprised and like the material and color. They are not scratchy or harsh. I recommend these to anyone living in the colder areas in this world.
C**A
Inconsistent, but if you get a good pair this is a great base layer!
I bought multiple pairs to try the fit, softness and warmth. Found that the 250 for women was not as soft. In fact, they are prickly and itchy. But, I got my husband a 250 blue pair, it was pretty soft. Not much different to him to his 320 black. My 320 army green is super soft. Cashmere like. Very warm. Bought the 320 black, very itchy. Hate the socks. They are itchy and rough. I would rather pay cheaper price than get the socks. I bought the gaiter from same brand, hate it. They are thin and rough. Not recommended. Size is true to fit. With a small being very closed to your body. If you want some room around your midsection, size up Overall, I give 3.5 star to 4 star for inconsistency. If you happen to get a good soft pair, keep it!!! It is as good as smartwool, helly hansen and all those nice base layer.
K**T
Bottoms are low rise and uncomfortable
The low rise on the bottoms kind of ruined this set for me. I have a lightweight and midweight pair in another brand from Amazon (Iguana), and those are great. Unfortunately, that brand doesn’t make a heavyweight option, so I opted for these. These are warm and soft, but for some unknown reason, they made the bottoms low rise??? I’m a small according to the size chart and bought a medium knowing I’d want extra room since I wear them hiking and climbing. Even sized up, these sit several inches below my belly button. The waist band digs into my hips, and the crotch constantly wants to ride up (🐫). I’m pretty bummed about how uncomfortable the bottoms are because they are warm and good quality otherwise. I kept these, but I never find myself reaching for them because of the bad fit. Wish I would have returned. Three stars because at least the shirt is nice. Also worth noting is I didn’t get the “free gift” socks or whatever they promised in the listing. Didn’t really care about them, but if you’re going to advertise them, at least deliver
A**R
Soft after you wash it—3x a charm! Durable and warm. Tops can be worn on their own.
When I put on my first pair of Merino.tech wool I thought reviewers had deceived me. They were much scratchier than I anticipated. I ordered two to test, but sent one pair back (I felt guilty returning the pair I tried on...yes I did wear underwear beneath, but still.) I decided to grin and bear it. Flash forward ... one wash. I immediately noticed a difference in the fabric. It was much softer. Not as smooth as silk, but not scratchy to the point of distraction. Two washes ... They were comfortable. Still not silk, but I could wear them even under tight fitting clothing and they were fine. I reordered the pair I returned. Three washes ... so cuddly! Not silky, but soft. On doing some research I found that sizing is used in wool to make it easier to work with—think starch. Starched underwear (or base layer, or whatever) is not something you want next to your skin. It takes about three washes to come out. I bought four pairs in the end, three in medium weight, and one heavyweight, and wear just about everyday (it's cold this year!) The fabric is breathable (so important ladies...ahem). It doesn't retain odors. The heavy weight pair is the softest of all. I wear them as jammies. Hubby loves them. Kids aren't scandalized when I pad out in the morning in them. I am recommending to all my friends and family members. The only thing I think you might want to worry about is if you don't live in a place that is really cold, or if you wear them under clothes into an office, you *might* get too toasty.
O**U
Excellent!
The set of Merino Women"s Thermal Underwear Top and Trousers was a perfect choice and it is just as described. It also came with a pair of Merino wool socks included. The color name is 250 Natural Merino which looks great, the quality is according to my expectations and the outfit is really warm and pleasant to the skin. I definitely recommend it.
I**A
Parfait
Parfait
S**Z
Comodo
Todavía no lo he usado para ir de viaje a sitios de frio extremo. Pero si puedo decir ahora que se adapta muy bien y es cómodo. El color este es muy bonito visto en la mano. Mucho mas que en la web
B**B
Good product
Perfect, nice and warm, soft and good fit.
A**E
Sehr empfehlenswert
Sehr empfehlenswert, wir haben uns damit eingedeckt für den Winter. 👍👍
Trustpilot
2 months ago
3 weeks ago