---
product_id: 383484645
title: "Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom"
brand: "merino.tech"
price: "AR$333058"
currency: ARS
in_stock: true
reviews_count: 13
category: "Merino.Tech"
url: https://www.desertcart.com.ar/products/383484645-merino-tech-merino-wool-base-layer-mens-set-heavyweight-midweight
store_origin: AR
region: Argentina
---

# Free Merino Wool Hiking Socks ($21 value) 250 g/m² Midweight Merino Wool Natural Thermoregulation & Moisture Wicking Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom

**Brand:** merino.tech
**Price:** AR$333058
**Availability:** ✅ In Stock

## Summary

> 🧗‍♂️ Elevate your base layer game — warmth, comfort, and style that won’t quit!

## Quick Answers

- **What is this?** Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom by merino.tech
- **How much does it cost?** AR$333058 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/383484645-merino-tech-merino-wool-base-layer-mens-set-heavyweight-midweight)

## Best For

- merino.tech enthusiasts

## Why This Product

- Trusted merino.tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Fit & Easy Care:** Designed with stretch cuffs and machine washable fabric for long-lasting wear and hassle-free maintenance.
- • **Premium Midweight Warmth:** 250gsm superfine merino wool balances cozy insulation with breathable comfort for all-day wear.
- • **Bonus Hiking Socks Included:** Step up your outdoor game with complimentary high-performance merino wool socks valued at $21.
- • **All-Day Comfort Without Itch:** Experience ultra-soft 17.5 micron wool that feels gentle on skin—no itch, no irritation, just pure comfort.
- • **Odor-Resistant & Moisture-Wicking:** Stay fresh and dry with natural wool fibers that absorb moisture and neutralize odors effortlessly.

## Overview

The Merino.tech Merino Wool Base Layer Mens Set features a 250 g/m² midweight superfine merino wool fabric that delivers optimal warmth and breathability. This set includes a long sleeve top and long john bottoms, plus a free pair of premium merino wool hiking socks valued at $21. Engineered for moisture-wicking, odor resistance, and all-day comfort without itch, it’s perfect for active professionals seeking reliable thermal wear. Durable, easy to care for, and backed by a satisfaction guarantee, this base layer is a top-rated choice for year-round performance and style.

## Description

Buy Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom (X-Large, 250 Black) and other Active Base Layers at desertcart.com. Our wide selection is elegible for free shipping and free returns.

Review: You won’t regret this purchase - I don’t usually write reviews, and have been mostly unimpressed with how it seems like desertcart is slowly transitioning to Alibaba i.e. many “companies” creating products of questionable quality HOWEVER This Merino base layer is P E R F E C T. Absolutely warm and comfortable. Great thickness and weight. Looks super good and smelled absolutely fresh using it three days in a row skiing. It’s expensive but worth it. Wish I could buy four more pairs. Really is an outstanding product. Hopefully it holds up over the years.
Review: Best PJ/Fall/Winter Base Layer Set There Is! - I’ve bought multiple sets of these merino base layers at this point for myself as well as gifts and they are by far my favorite winter/PJ clothing articles I own. They are super comfortable for wool, which can often be itchy. They are tightly knit and have a good amount of stretch. The arm and leg cuffs have built in elastics that are super durable and great quality. They fit true to size and the material is a perfect thickness for balancing breathability and warmth. I highly suggest giving this set a try. I’ve had mine for multiple years at this point and they are still in great condition. TLDR: Buy these now. They are a bit pricey but their value is more than worth the price. And you also get free gifts!

## Features

- Midweight: Mens Merino Base Layer Available in: Lightweight = 165 g/m², Midweight = 250 g/m², Heavyweight = 320 g/m². Free Merino Wool Hiking Socks ($21 Value) – Package includes Midweight Merino wool base layer mens top and wool men long johns 250 g/m² + Merino Wool Hiking Socks. Cool Packaging. Makes A Great Gift.
- Super Soft & Comfortable: 100% Superfine 17.5 Micron merino wool base layer set mens provides all day comfort and no itch! Merino wool long underwear men set was designed for daily wear without rubbing, overheating, or bunching of regular cotton.
- Moisture Wicking & Odor Resistant: Natural wicking and odor-resistant properties of merino wool thermal underwear allow it to absorb moisture better than any other fabric, keeping you dry and fresh.
- Breathable – For longer lasting wear, hand wash and lay flat to air dry. Mens wool long johns sets naturally regulate body temperature to keep you comfortable all year round.
- Zero Worries: Every we make merino wool base layer top mens and long johns are backed by our Merino.tech Promise - ensuring you're 100% happy with every Merino.tech purchase. For best results hand wash and lay flat to dry

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09C4WCKL9 |
| ASIN  | B0B68BHX2P |
| Apparel Closure Type | Pull On |
| Best Sellers Rank | #19,097 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #8 in Men's Base Layers |
| Brand Name | Merino.tech |
| Collection Name | All |
| Color | . 250 Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,546) |
| Date First Available  | July 11, 2022 |
| Department  | mens |
| Fabric Type | 100% Superfine Merino Wool |
| Fit Type | Regular |
| Item Type Name | Base Layer Set |
| Material Type | 100% Superfine Merino Wool |
| Neck Style | Crew Neck |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Size | X-Large |
| Sleeve Type | Long Sleeve |
| Style Name | 250gsm Midweight |

## Images

![Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom - Image 1](https://m.media-amazon.com/images/I/61ORF+kAOHL.jpg)
![Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom - Image 2](https://m.media-amazon.com/images/I/71fdtg4knHL.jpg)
![Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom - Image 3](https://m.media-amazon.com/images/I/81fkcA3SE9L.jpg)
![Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom - Image 4](https://m.media-amazon.com/images/I/81LTfL3vbpL.jpg)
![Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom - Image 5](https://m.media-amazon.com/images/I/81ScDP8-0jL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: I wear 34 34 pants what size do I need?**
A: I wear 30” waist and have a 32” inseam, 5’11” and 150 lbs. I bought size small under layer pants for a nice snug fit. When I bought them I had a 33” waist. After 3 days they loosen up in the crotch and upper legs. I have relatively skinny legs.  For the base layer shirt I buy medium.  The small is a nice tight fit but the arms are about an inch shorter than I like.  The medium is snug fitting to slightly looser in places but fits my arm length.  The mid weight (250) shirt is too hot in any temp over about 55 degrees especially with movement. Next time I’ll by the lite weight. The mid weight (250) pants are perfect at any temperature, though I run cold from the waist down. I never leave the house without them on

**Q: I wear a 29x30 pants, nothing measured makes sense on this chart. 5’6” 130#. Small or medium?**
A: I wear 30” waist, have a 32” inseam and I’m 5’11” and skinny.  I buy size small under layer pants for a nice snug fit. The length is fine. It goes to slightly below my ankle bone. For the base layer shirt I buy medium.  The small is a nice tight fit but the arms are about an inch shorter than I like.  The medium is snug fitting, slightly looser in places, but they fit my arm length. I find the mid weight to be a too hot for anything over 50-55 degrees, especially with movement, and I’m going to go for the lite weight next time in the shirt, but the mid weight (250) pants feel great in hot or cold weather.

**Q: I am 69.5 inches height and 235 pounds will XXL be too big?**
A: Don't think So I'm 65 in  250 # and they fig Mr comfortably

**Q: Possible gift for my boyfriend who is 6'6 and 300+lbs. he wears a 2x in tall. would you say it would give more length in the 3x? or just be wider**
A: Both length and width

## Customer Reviews

### ⭐⭐⭐⭐⭐ You won’t regret this purchase
*by M***A on February 21, 2026*

I don’t usually write reviews, and have been mostly unimpressed with how it seems like Amazon is slowly transitioning to Alibaba i.e. many “companies” creating products of questionable quality HOWEVER This Merino base layer is P E R F E C T. Absolutely warm and comfortable. Great thickness and weight. Looks super good and smelled absolutely fresh using it three days in a row skiing. It’s expensive but worth it. Wish I could buy four more pairs. Really is an outstanding product. Hopefully it holds up over the years.

### ⭐⭐⭐⭐⭐ Best PJ/Fall/Winter Base Layer Set There Is!
*by M***. on October 13, 2025*

I’ve bought multiple sets of these merino base layers at this point for myself as well as gifts and they are by far my favorite winter/PJ clothing articles I own. They are super comfortable for wool, which can often be itchy. They are tightly knit and have a good amount of stretch. The arm and leg cuffs have built in elastics that are super durable and great quality. They fit true to size and the material is a perfect thickness for balancing breathability and warmth. I highly suggest giving this set a try. I’ve had mine for multiple years at this point and they are still in great condition. TLDR: Buy these now. They are a bit pricey but their value is more than worth the price. And you also get free gifts!

### ⭐⭐⭐⭐⭐ Even a Sasquatch would like these
*by M***H on September 9, 2025*

Bought this as gift for my skeptical Salt of the Earth Hubs who was not aware yet of the true superiority that is merino. His face dropped and I had to put his chin back into place when he asked How Much. I was utterly unfazed and ignored his protest. I easily got past his merino gear green inexperience and told him to ‘just try them because these will change your life’ with a grin. To put it short and sweet: He proceeded to basically only take them off to wash over the next five months. His only comment, actually Using His Words: he wanted another set. This, so he always had some clean and multiple weights so he could regulate better and choose depending on the weather forecast for the day he’d be out. I noticed his old synthetics were crumpled in the bottom of his gear bags when he’d come home. The merino were always within reach on top, and gasp, folded! High Praise from this man, folks. It should be stated he is THE case for the legitimacy of merino, and these extremely well priced merino sets: he is a heavy equipment operator that works outside on top of mountains in some of the most extreme winter environments on earth and loves it. For you, the reader’s purpose, let’s just agree to put aside the elephant-in-the-room Crazy Factor of that last sentence for now and stick to the underwear. All I can say in his defense is this world takes all types. That’s only important here to mention since he’s not a dude that sits around in it next to a cozy fire all winter sipping from a tea cup. (That’s my job, lol.) This set was put to a legit durability test and in incredibly harsh conditions and stood up. Once prompted for more detail, and translating out of his customary grunts, shrugs and sighs, he said [paraphrasing]: he stopped noticing whether or not his body was cold or hot since he was the perfect temperature all the time and stopped sweating whether in or out of a machine. He didn’t have to wear nearly as many layers in general. He didn’t have to strip ones off or put other ones on depending on where he was and what was happening nearly as much. He stayed warm even when outer gear got wet with frozen sleet driving and he had to move back and forth outside from truck to machine to truck. He wasn’t losing gear and other layers from job sites, trucks, machines or in the snow nearly as much either from stripping off and forgetting. The merino set remained odor free for an entire work cycle between washings so he reused them everyday. They stayed true to fit and didn’t stretch out of shape even wearing for long periods and for multiple days in a row. All day comfort second skin feel. No bunching in the armpits nor crotch. Ordered the 2XL, biggest they offer I think. He’s normally 3XL big and tall, so I wasn’t sure if these would fit but as a first or second layer snug is good. His back and shoulders can be a challenge to find proper fit for and I often tailor his clothes and gear, but these are perfect with long arms and a long torso design to accommodate various sizes and shapes. Spare to tuck in even! Fantastic!: This is important since he sometimes has to do mechanical repair on the fly. On top of a mountain on the machines, before this merino set, his lower back would sometimes come home chaffed and raw from cold exposure from these situations. A red burn from bending over with elements beating on him, not wanting to touch his clothes since his hands and outer gear coated with grease, tucking back is not a desirable option. The winds are basically trying to tear everything off so to have it stay in place and enough fabric to remain tucked in? chef kiss. Going into this next winter season depending on where he is going this year, we’ll get another set at a different weight. He said he wanted that versatility this time.

## Frequently Bought Together

- Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom
- Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks
- Merino.tech Merino Wool Base Layer - Mens 100% Merino Wool Long Sleeve Thermal Shirts Heavyweight, Midweight, Lite with Socks

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-17*