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Fabric: 100% Royal Alpaca Wool
Fabric Dye: Low Impact Dyes (GOTS)
Fabric Finishing: Silicone (OEKO-TEX)
Elastic: 50% Tree Rubber, 50% Cotton
Thread: 100% Pima Cotton
Thread Dye: Reactive Dye
Label: 100% Royal Alpaca Wool
Label Ink: Synthetic (GOTS)

Materials

Men's Alpaca Wool Sweatpants

420 Midweight

Men's Alpaca Wool Sweatpants: 420 Midweight

Regular price $279.10
Regular price $348.87 Sale price $279.10
20% OFF
Size

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

Shipping & Returns

Free Shipping for US orders over $200 that are purchased from our US warehouse.*

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mens all natural sweatpants midweight color gray
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Men's Alpaca Wool T-Shirt

110 Ultralight

$279.10
🌱  Leave No Trace Apparel
Not in Stock? Email us

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.

mens all activities sweatpants midweight color gray

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

Men's Alpaca Wool Hoodie

230 Lightweight

from $145

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mens high sweat wicking boxer briefs color navy blue
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color black
color gray
color navy blue
color lilac
color natural white
color natural blue
color natural red

Men's Alpaca Wool Boxers

110 Ultralight

from $40

Customer Reviews

Based on 15 reviews
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B
Brett Stone
Amazing

Love the feel and fit of this well made piece of clothing. Super strechy and comfortable. Feel warm and breathable and well constructed.

It's great to know that you find it super comfortable, and well-constructed while providing warmth and breathability. If you ever need anything else, just let us know! :D

L
Louis P.
420

Great product- 420 midweight sweatpants

Thank you for your preference :D

N
Noel-Faith Manito
Perfect for a slim athletic fit.

Keeps me warm and is anti-stinky. I use it after my boxing workouts. And sometimes during. It can stay fresh and clean for a while. Well made and worth it.

L
Livesoutdoors
Get them!

These are the finest winter bottoms made. PERIOD. They soften with each washing and get even more comfortable. Buy them, NOW! You won't regret it.

C
C Little
Joggers are really warm

Really fast delivery! The joggers are really warm and the material is thick.