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Fabric: 100% Royal Alpaca Wool
Fabric Dye: Low Impact Dyes (GOTS)
Fabric Finishing: Silicone (OEKO-TEX)
Thread Dye: Reactive Dye
Label: 100% Royal Alpaca Wool
Label Ink: Synthetic (GOTS)

Plastic-Free Ingredients

Men's Alpaca Wool Sweatpants

420 Midweight

Men's Alpaca Wool Sweatpants: 420 Midweight

Regular price $195.00
Regular price Sale price $195.00
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Alpaca vs Merino

Alpaca Wool outperforms Merino.

Alpaca fibers evolved in the harsh Peruvian Andes over millennia, to keep you protected on any adventure.

Unique Semi-Hollow Fibers:
• Lighter Weight
• Higher Insulation

Smoothest Fiber Scales:
• Moisture Wicking
• Softer without Felting

High-Performance Fiber

Pack lighter, travel farther.

Get the most out of nature with the ultimate performance fiber. Explore the outdoors clean and dry, with naturally anti-bacterial and temperature regulating Alpaca Wool.

❊ Anti-bacterial & Odor-resistant
↻ High sweat-wicking
☁ High breathability
☀ UV - Protection
✓ Light & durable

Microplastic-Free World

We put a stop to plastic pollution.

It is our mission to make clothes that allow you to explore nature without contaminating it with microplastics.

This is the first step in making our entire catalog petroleum-free and biodegradable.

We use only biodegradable materials:
• 100% Royal Alpaca Wool Fabric
• 100% Cotton Threads
• 100% Cotton Labels

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Men's Alpaca Wool T-Shirt

110 Ultralight

$195.00
🌱  Leave No Trace Apparel
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Alpaca vs Merino

Fabric Care

FREE SHIPPING* & Returns

LESS WEIGHT, LESS WASHING

The Best Winter Sweatpants

Our 100% Royal Alpaca Wool Sweatpants are crafted for conquering the outdoors in the most extreme conditions. They are breathable, and will keep you warm, and comfortable whether you're winter hiking, snowshoeing, or skiing. Thermoregulating and high moisture-wicking bottom layers are a must-have for any winter adventure.

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NATURAL HIGH-PERFORMANCE

The Best Fleece Sweatpants

For thousands of years, alpacas have been adapting to extreme environments of the Andes Mountains, where temperatures range widely. The harsh highland conditions created the ultimate outdoor fiber, designed to keep you protected, clean, and comfortable.

LEARN MORE ABOUT ALPACA PERFORMANCE

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ALPACA WOOL: FIBER OF THE GODS

The Superior Fiber for the Outdoors

Alpaca wool is a superior choice for the outdoors and outperforms any other fiber: merino wool, cotton, rayon and polyester.

THE COMPARISON: ALPACA VS OTHER FIBERS →

LOW ENVIRONMENTAL IMPACT

Eco-Friendly Sweatpants

When wearing 100% Alpaca Wool, you can rest assured that your clothes are not contaminating nature.

DISCOVER OUR SUSTAINABILITY

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SINGLE ORIGIN SUPPLY CHAIN

Where Were These Sweatpants Made?

We use natural local resources and a short transparent supply chain. Our mission is to teach you as much as possible about how clothes should be made. Together we can move the fashion industry towards a sustainable future.

LEARN MORE ABOUT OUR SUPPLY CHAIN

Complete Your Hiking Pack

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Men's Alpaca Wool Hoodie

230 Lightweight

from $155

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Men's Alpaca Wool Boxers

110 Ultralight

from $35

Customer Reviews

Based on 5 reviews
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K
Karen Herrmann Fishelaon

My son loves them

J
Joseph Stern
A perfect sweatpant

I’m going to get more of these, they’re the best sweatpants I’ve ever worn!

T
Todd Fahrner
Heavenly

Probably the most luxurious-feeling garment I've ever owned in my 55 years.

E
Enzo M
Better than I had imagined!

It's only been two weeks since these pants came in, but wow I'm impressed. Soft, thick material. Very comfortable and warm! I wish the inseam was maybe half an inch shorter in the size small that I purchased, but I'm considering getting another anyway. These haven't pilled yet (not sure if they will), but many of my cool and even some cashmere articles of clothing (joggers/sweatpants and hoodies) started pilling after a few uses. I'll update this review if it seems like the longevity isn't there, but I'm very happy thus far.

M
Mark S.
Soft, thick, warm...luxurious!

I live in the Pacific NW and wool, in my humble opinion, is a must for anyone that wants to be outdoors in the winter. It's cold, and rainy. Virtually 75% of my every day and outdoor clothing is merino wool. I got an ad in my email from Arms of Andes and after looking through their products decided to take the dive. I could not be happier. I bought the men's lounging pants (my name for them) and the heavy 1/4 zip shirt. I love them, absolutely love them. They are heavy duty and have become my morning clothes as i live in a 113 year old home that is chilly in the morning until the heat warms things up. I will be buying more from this company, for sure, and highly recommend them to anyone looking for quality, well priced Alpaca wool clothing!