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🧥 Elevate your base layer game—comfort, performance, and style that won’t quit!
The Merino.tech Women's Midweight Merino Wool Base Layer Set features 250 g/m² superfine 18.5 micron Merino wool, delivering breathable, odor-resistant, and temperature-regulating thermal underwear. Designed for all-day comfort without itching, this set includes a long-sleeve top, bottoms, and a free pair of Merino wool hiking socks. Ideal for year-round wear, layering, and multi-day use, it’s backed by a lifetime warranty and easy-care instructions, making it a smart, stylish choice for active professionals and outdoor enthusiasts alike.





































| ASIN | B09C4KJ99B |
| Age Range Description | Adult |
| Apparel Closure Type | Pull On |
| Apparel Fabric Stretch | Low Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Best Sellers Rank | #106,507 in Fashion ( See Top 100 in Fashion ) #11 in Women's Thermal Underwear Bottoms #40 in Women's Thermal Underwear Tops |
| Brand Name | Merino.tech |
| Care instructions | Wash on Delicate Cycle and Lay Flat to Dry |
| Collection Name | Winter |
| Color | .250 Black |
| Customer Reviews | 4.5 out of 5 stars 756 Reviews |
| Fabric Type | 100% Merino Wool |
| Fit Type | Stretch |
| Fit to Size Sentiment | True to Size |
| Garment Size Country | United States |
| Import Designation | Imported |
| Item Highlight | Lightweight / Medium / Heavy Thermal Functional Underwear Set for Skiing, Trekking and Outdoor, Breathable |
| Item Type Name | Base Layer Set |
| Manufacturer | Merino.tech |
| Manufacturer Part Number | WST-250 |
| Material Type | Wool |
| Material composition | 100% Merino Wool |
| Neck Style | Crew Neck |
| Number of Items | 3 |
| Package Quantity | 1 |
| Pattern | Solid |
| Product Care Instructions | Wash on Delicate Cycle and Lay Flat to Dry |
| Shoulder to Bottom Hem Length | 24 Centimeters |
| Size | M |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Classic |
| Style Number | 250 |
| Unit Count | 3 Count |
M**N
Es muy grueso y no te puedes poner nada arriba. La calidad es excelente
No me gustó porque no me puedo poner nada más, no se pega al cuerpo
A**R
ما انصح
مافاد مع الجو البارد في شهر ٣ ميلادي!
J**E
Muy bueno de momento.
Olor que dura bastante, para mi es agradable y da una sensación de limpieza que otras marcas mas caras no dan, también deja la barba un poco seca asi que muy recomendable usar el aceite siempre despues de cada lavado de su misma marca. El detalle de los calcetines es de agradecer pero estaria bien que pusiese la talla en el mismo ya que tengo varios de diferentes medidas y hay que estar comparandolos, no costaria nada poner la talla.
C**9
Warm and good quality
I bought this set for a trip to Iceland and wore for 3 consecutive days in cold conditions. Kept me warm even when my trousers on top got wet. Runs slightly big but I prefer this for hiking and layering. I’m 5ft and the leggings run long, easy to roll up though. Quality is excellent and overall it’s good value for money and merino wool is the best for keeping you warm!
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.
Trustpilot
3 weeks ago
2 weeks ago