---
product_id: 259455340
title: "Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks"
brand: "merino.tech"
price: "$U5067"
currency: UYU
in_stock: true
reviews_count: 13
category: "Merino.Tech"
url: https://www.desertcart.uy/products/259455340-merino-wool-base-layer-mens-bottom-pants-100-merino-wool
store_origin: UY
region: Uruguay
---

# Midweight 250 g/m² for optimal warmth Includes premium Merino wool hiking socks 100% superfine 17.5 micron Merino wool Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks

**Brand:** merino.tech
**Price:** $U5067
**Availability:** ✅ In Stock

## Summary

> 🧣 Stay warm, stay fresh, and never compromise on comfort.

## Quick Answers

- **What is this?** Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks by merino.tech
- **How much does it cost?** $U5067 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/259455340-merino-wool-base-layer-mens-bottom-pants-100-merino-wool)

## 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

- • **Bonus Socks Included:** Step up your cold-weather game with premium Merino hiking socks valued at $21.
- • **Durability Meets Style:** Built to last with easy care—machine washable and perfect for layering.
- • **Odor-Resistant Freshness:** Natural Merino properties keep you dry and odor-free during long days.
- • **All-Day Comfort, Zero Itch:** Superfine Merino wool ensures softness and breathability without irritation.
- • **Thermal Regulation Mastery:** Midweight 250 g/m² fabric balances warmth and moisture wicking for year-round wear.

## Overview

These men's base layer pants are crafted from 100% superfine Merino wool (17.5 micron) with a midweight 250 g/m² fabric that delivers superior thermal regulation and moisture management. Designed for active professionals, they come with premium Merino hiking socks and feature odor resistance, durability, and easy care. Perfect for cold-weather layering, these pants combine performance with everyday comfort and style.

## Description

Buy Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks (X-Large, Black 250) and other Bottoms at desertcart.com. Our wide selection is elegible for free shipping and free returns.

Review: Nice comfortable product - Perfect fit. Husband is 5'6" 145lbs wearing Small. Soft feel yet light and warm.
Review: Warm, and Good for Layering, and Great for Cold Rides! - I picked up the medium black 250 and it’s been perfect for cold weather riding and chilly workdays. I’m 5'10" and 180 lbs, and while the fit is a bit loose, the length is perfect. After 2 years of regular use, it’s still going strong—just a minor hole at the ankle, easily hidden by socks. Pros: ✅ Great Cold-Weather Warmth (250 Weight) – Warm enough that I haven’t needed to upgrade to 320 ✅ Ideal for Motorcycle Rides & Cold Work Days – Keeps me warm without bulk ✅ Socks Are High Quality – Cozy and well-made ✅ Durable Over Time – Still in good shape after 2 years Cons: ❌ Slightly Loose Fit (Medium on 5'10", 180 lbs) – Not overly baggy, just not snug ❌ Minor Wear – Small hole near ankle, but nothing major Final Thoughts: Whether you’re riding in the cold or braving freezing temps at work, this base layer does the job exceptionally well. Warm, breathable, and built to last—an excellent investment for cold-weather comfort.

## Features

- Midweight: Mens Merino Base Layer Available in: Lightweight 165 g/m², Midweight 250 g/m², Heavyweight 320 g/m². Merino Wool Hiking Socks ($21 Value!) - Midweight Merino Wool Pants for Men 250 g/m² and Wool Socks. Cool Packaging! Makes A Great Gift!
- Super Soft & Comfortable: 100% Superfine 17.5 Micron Merino Wool Underwear Mens provide all day comfort and no itch! Designed for daily wear without rubbing and overheating of regular cotton.
- Moisture Wicking & Odor Resistant: Merino Baselayer Men natural wicking and odor-resistant properties allow it to absorb moisture better than any other fabric, keeping you dry and fresh.
- Easy Care: Washer/dryer safe. For longer lasting wear, hand wash and air dry. Midweight Merino Wool Base Layer Mens naturally regulates body temperature to keep you comfortable all year round.
- Zero Worries: Every Merino.tech Merino Pants we make is backed by our Merino.tech Promise - ensuring you're 100% happy with every Merino.tech purchase.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0B8SP5PPG |
| Best Sellers Rank | #3,665 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #7 in Men's Thermal Underwear Bottoms |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,205) |
| Date First Available  | June 22, 2021 |
| Department  | mens |
| Item model number  | 165 |
| Package Dimensions  | 10 x 9 x 0.7 inches; 4.8 ounces |

## Images

![Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks - Image 1](https://m.media-amazon.com/images/I/319ElZH5MUL.jpg)
![Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks - Image 2](https://m.media-amazon.com/images/I/41+7ULp83NL.jpg)
![Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks - Image 3](https://m.media-amazon.com/images/I/510CQ334UCL.jpg)
![Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks - Image 4](https://m.media-amazon.com/images/I/51BzOOnSjaL.jpg)
![Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks - Image 5](https://m.media-amazon.com/images/I/51XBWmOjR7L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice comfortable product
*by S***E on December 26, 2025*

Perfect fit. Husband is 5'6" 145lbs wearing Small. Soft feel yet light and warm.

### ⭐⭐⭐⭐⭐ Warm, and Good for Layering, and Great for Cold Rides!
*by C***R on April 30, 2025*

I picked up the medium black 250 and it’s been perfect for cold weather riding and chilly workdays. I’m 5'10" and 180 lbs, and while the fit is a bit loose, the length is perfect. After 2 years of regular use, it’s still going strong—just a minor hole at the ankle, easily hidden by socks. Pros: ✅ Great Cold-Weather Warmth (250 Weight) – Warm enough that I haven’t needed to upgrade to 320 ✅ Ideal for Motorcycle Rides & Cold Work Days – Keeps me warm without bulk ✅ Socks Are High Quality – Cozy and well-made ✅ Durable Over Time – Still in good shape after 2 years Cons: ❌ Slightly Loose Fit (Medium on 5'10", 180 lbs) – Not overly baggy, just not snug ❌ Minor Wear – Small hole near ankle, but nothing major Final Thoughts: Whether you’re riding in the cold or braving freezing temps at work, this base layer does the job exceptionally well. Warm, breathable, and built to last—an excellent investment for cold-weather comfort.

### ⭐⭐⭐⭐⭐ Best long johns I've ever owned !
*by R***. on October 14, 2025*

The Merino Wool Base Layer Mens Bottom Pants are very warm, soft and comfy. I bought the Heavyweight, 320g bottoms, and I was worried about them being too thick, they're not that thick at all, they are perfect, very, very comfortable and warm. I was golfing with them in 40 degree weather with 12 mph wind and my legs were not cold at all, plus they were not too warm either, actually just right. I didn't where anything but a t-shirt, polo shirt, and light wind proof Foot Joy golf jacket on top, but my chest and arms were not as comfy warm, as my legs were, even though I was wearing thin golf pants over the Merino bottoms. I live in a cold, northern, climate and have bought many, many, different types of "long Johns" and these are by far the best I've ever bought. When it comes to bottom layer long johns, I think they should be snug, but not too tight, I have a 33 inch waist and a 32 inch inseam and their medium size fit me perfect!

## Frequently Bought Together

- 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 Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom
- Merino.tech Merino Wool Socks for Women And Men - Merino Wool Hiking Socks Crew Style

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-22*