---
product_id: 235771641
title: "Smartwool Men's Classic Thermal Merino Base Layer Bottom"
brand: "smartwool"
price: "€ 256.97"
currency: EUR
in_stock: true
category: "Smartwool"
url: https://www.desertcart.fi/products/235771641-smartwool-mens-classic-thermal-merino-base-layer-bottom
store_origin: FI
region: Finland
---

# 100% Merino Wool - natural warmth Midweight Thermal - optimal cold-weather warmth Flatlock Seams - chafe-free comfort Smartwool Men's Classic Thermal Merino Base Layer Bottom

**Brand:** smartwool
**Price:** € 256.97
**Availability:** ✅ In Stock

## Summary

> 🐑 Stay warm, move free, and own the cold in Smartwool’s Merino 250 Base Layer Bottoms.

## Quick Answers

- **What is this?** Smartwool Men's Classic Thermal Merino Base Layer Bottom by smartwool
- **How much does it cost?** € 256.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/235771641-smartwool-mens-classic-thermal-merino-base-layer-bottom)

## Best For

- smartwool enthusiasts

## Why This Product

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

## Key Features

- • **Chafe-Free Movement:** Flatlock seams minimize irritation so you can push your limits without distraction.
- • **Sustainably Stylish:** Eco-conscious materials meet sleek, slimming silhouette—because your base layer should work as hard as you do.
- • **Next-Level Breathability:** Interlock knitting wicks moisture and regulates temperature for all-day comfort.
- • **Ultimate Warmth, Zero Bulk:** Slim fit design with 21.5" inseam keeps you agile without the extra fabric.
- • **Made in the USA, Crafted for Adventure:** Proudly manufactured domestically with premium Merino wool for durability and sustainability.

## Overview

Smartwool's Men's Classic Thermal Merino Base Layer Bottoms are crafted from 100% midweight Merino wool, designed for cold-weather outdoor activities. Featuring a slim fit with a 21.5" inseam, interlock knitting for enhanced breathability and moisture management, and flatlock seams to prevent chafing, these USA-made base layers deliver warmth, comfort, and durability for the active professional who demands performance and style.

## Description

Buy SmartWool SW016361001M Men's Merino 250 Baselayer Bottom Black M: Active Base Layers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- 100% Merino Wool
- Made in the USA
- COLD WEATHER BASE LAYER. Keep your ski or hiking boots free of bulk and friction with our 3/4 Bottom. Merino wool provides ultimate comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for layering.
- SLIM FIT. Designed to meet the demands of outdoor adventuring, these slim fit bottoms show off a slimming silhouette while offering unrestricted movement through the legs. Inseam: 21.5"
- CLASSIC THERMAL MERINO. Ideal for cold-weather activities where warmth and breathability are crucial, this midweight fabric used a Merino wool construction that helps move moisture away from skin to keep you warm and dry.
- FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you trekking comfortably — interlock knitting enhances breathability, thermoregulation and moisture-wicking while flatlock seams minimize chafing for greater comfort.
- GO FAR. FEEL GOOD. From wool socks to base layers for men, women and kids, we aim to provide the highest quality apparel for your outdoor adventures with a commitment to environmental sustainability, racial equity and inclusivity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083QDVWTX |
| Age Range Description | Adult |
| Apparel Closure Orientation | Front |
| Apparel Closure Type | Snap |
| Apparel Fabric Stretch | Low Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Apparel Occasion and Lifestyle | outdoor adventure |
| Best Sellers Rank | #187,265 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #62 in Men's Base Layers #63 in Men's Thermal Underwear Bottoms |
| Brand Name | Smartwool |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (638) |
| Fabric Stretchability | Stretchable |
| Fabric Type | 100% Merino Wool |
| Fit Type | Slim |
| Fit to Size Sentiment | Positive |
| Front Pleat Type | Flat Front |
| Garment Size Country | Vietnam |
| Global Trade Identification Number | 00193392652664 |
| Import Designation | Made in the USA |
| Inseam Length | 21.5 inches |
| Item Length Description | Ankle Length |
| Item Type Name | Men's Merino 250 Baselayer Bottom |
| Item Weight | 9.28 ounces |
| Leg Style | Slim |
| Lining Description | 100% Merino wool |
| Manufacturer | Smartwool |
| Manufacturer Part Number | SW016361001-M |
| Material Type | Wool |
| Model Name | Merino 250 Base Layer Bottoms |
| Number Of Pockets | 5 |
| Number of Items | 1 |
| Occasion Type | hiking |
| Pants Form Type | Leggings |
| Pattern | Solid |
| Pattern Style | Solid |
| Product Care Instructions | Machine Wash |
| Rise Style | High Rise |
| Sleeve Length Description | 3/4 Sleeve |
| Style Name | Merino 250 Base Layer Bottoms |
| Style Number | Smartwool |
| Team Name | Smartwool |
| UPC | 193392652664 |
| Unit Count | 1 Count |
| Waist Size | 33 inches |
| Weave Type | Plain |
| character | Sports |

## Images

![Smartwool Men's Classic Thermal Merino Base Layer Bottom - Image 1](https://m.media-amazon.com/images/I/41TzA+ljY-L.jpg)
![Smartwool Men's Classic Thermal Merino Base Layer Bottom - Image 2](https://m.media-amazon.com/images/I/51b2l1s0XGL.jpg)

## Available Options

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

## Questions & Answers

**Q: Size Why should I order with a 32 inch waist and a 34 inch out seemWhen ordering smart wool men’s pants**
A: I am 6"1 34 waist medium was perfect fit.

**Q: what size should I order to man 6'3" 175 pounds 35" waist?  And do smartwool men's bottoms come in light weight, medium and heavy?  Thank you**
A: Hi there, 
a medium accommodates up to a 34'' waist, and a size large accommodate a size 35'' waist to 37''.

**Q: I have a 27" waist and a 36" inseam.  which size pants and shirts should i order? ps, i'm female but no one has my inseam it seams.**
A: I have a 31" waist and 31" inseam.  The men's Medium size fits me well.  Good luck from Seattle

**Q: are these good for working out in the garage or doing yard work when it's about 50 degrees?**
A: They are very comfortable, so I do not see why they would not work well under those conditions. I wore these for extra warmth walking many miles throughout Japan in November of 2022. The temperature in the morning was around 45F to 54F.

## Frequently Bought Together

- Smartwool Men's Classic Thermal Merino Base Layer Bottom
- Smartwool Men's Classic Thermal Merino Wool Base Layer Crew (Slim Fit)
- Smartwool Women's Classic Thermal Merino Baselayer Crew

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**Shop now:** [https://www.desertcart.fi/products/235771641-smartwool-mens-classic-thermal-merino-base-layer-bottom](https://www.desertcart.fi/products/235771641-smartwool-mens-classic-thermal-merino-base-layer-bottom)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-08-13*