Merino.tech Merino Wool Base Layer Women Set - Heavyweight, Lite, Midweight Merino Thermal Underwear for Women Top, Bottom
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Availability:
Only 5 left in stock, order soon!
Arrives
Wednesday, Jul 22
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Size: Large
Color: .250 Black
Package Dimensions : 10 x 9 x 0.7 inches; 9.6 ounces
Department : womens
Date First Available : August 8, 2021
Manufacturer : Merino.tech
Best Sellers Rank: #29,812 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #5 in Women's Athletic Base Layers
#5 in Women's Athletic Base Layers:
Customer Reviews: 4.4 4.4 out of 5 stars (3,057)
Brand Name: Merino.tech
Number of Items: 3
Age Range Description: Adult
Style Number: 250
Fit Type: Regular
Sleeve Type: Long Sleeve
Neck Style: Crew Neck
Fit to Size Sentiment: true
Sleeve Length Description: Long Sleeve
Apparel Closure Type: Pull On
Material Type: 100% Superfine Merino Wool
Fabric Type: 100% Superfine Merino Wool
Apparel Fabric Weight Class: Medium Weight
Apparel Fabric Stretch: Low Stretch
Product Care Instructions: Wash on Delicate Cycle and Lay Flat to Dry
Color: .250 Black
Pattern: Solid
Collection Name: Winter
Style Name: 250gsm Midweight
Size: Large
Garment Size Country: United States
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jul 22
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: Small
Color: .250 Black
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.
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Reviewed in the United States on January 11, 2026 by Meg
Size: Large
Color: Black Oil
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!
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Reviewed in the United States on January 31, 2025 by Ash
Size: XX-Large
Color: .250 Charcoal Grey
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.
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Reviewed in the United States on January 26, 2026 by Laura Zee
Size: Medium
Color: Black Oil
UPDATE: I contacted Merino.tech with the feedback and they quickly replaced the bottom pant, honoring their warranty. Original Review 3-stars I wanted to love this Merino.tech merino wool baselayer set. The fabric is warm and, after washing, it does feel soft and comfortable against the skin. As a baselayer, it does a good job retaining warmth and initially feels high quality. Unfortunately, the durability has been disappointing. The fabric pills very easily, and after only seven wears and two washes (both done according to the care instructions), the set already looks heavily worn. I also noticed a small hole developing. For a merino wool baselayer, this amount of wear in such a short time is concerning. For the price, I expected these to hold up better over time. They’re warm and comfortable, but the premature pilling and damage make it hard to recommend them for regular use.
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Reviewed in the United States on January 31, 2026 by Briauna
I love the Merino tech sets and have several. They are an excellent value when on sale. Very comfortable, warm and cozy. The only negative is that they do stretch out a bit and can get baggy. They reset when washed. I would love if this company made lighter weight leggings that don't stretch out and could be worn under dresses. I love the variety of colors and patterns.
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Reviewed in the United States on March 6, 2026 by HomeSchooler100
I’m an island girl who recently spent a snowy weekend in Michigan, so staying warm was a real test. When my daughter saw how thin the fabric was, she didn’t think it would do much , but we were both pleasantly surprised. The material is lightweight and seamless under layers, which I loved. It kept me warm outdoors and still felt comfortable enough to lounge in. I even felt cute wearing just the set in my room. It’s not teddy-bear soft and can be slightly itchy at first, but that’s typical of merino wool. Overall, it did exactly what it’s supposed to do , and I’m very happy with it.
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Reviewed in the United States on March 2, 2026 by NVM