• womens most sustainable sweatpants midweight color gray

    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

    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

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
  • womens most sustainable sweatpants midweight color gray

    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

    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
  • womens warmest sweatpants midweight color black

    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

    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
  • womens mostcomfortable sweatpants midweight color black

    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

    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
  • womens all purpose sweatpants midweight color black

    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

    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
  • womens versatile design sweatpants midweight color black

    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

    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
  • womens wind protection sweatpants midweight color black

    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

    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
  • womens royal alpaca wool sweatpants midweight color gray

    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

    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
  • womens adventure sweatpants midweight color gray

    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

    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
  • womens single origin sweatpants midweight color gray

    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

    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
  • womens active comfort sweatpants midweight color gray

    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

    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
  • womens antibacterial sweatpants midweight color navy blue

    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

    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
  • womens ecological sweatpants midweight color navy blue

    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

    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
  • womens breathable sweatpants midweight color navy blue

    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

    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
  • womens low impact dye sweatpants midweight color navy blue

    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

    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
  • womens thermo regulate sweatpants midweight color navy blue

    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

    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

  • 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

    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

  • 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

    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

  • 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

    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

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

Women's Alpaca Wool Sweatpants

420 Midweight

Women's Alpaca Wool Sweatpants: 420 Midweight

¥36,738

¥27,554

¥36,738 ¥36,738
0% OFF

25% OFF

Low Impact Dyes:
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Women's Alpaca Wool Sweatpants: 420 Midweight

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Product weight (medium): 18 oz / 510 gr

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 $150 that are purchased from our US warehouse.*

View full details

LESS WEIGHT, LESS WASHING

Wool Sweatpants for Winter

Forget the cold with our luxuriously warm & highly breathable alpaca wool sweatpants, ethically made from the MOST SUSTAINABLE & HIGH-PERFORMANCE 100% Alpaca fabric. Designed for the most extreme conditions, these incredibly soft sweatpants will deliver supreme comfort on any winter pursuits. Embrace nature with Arms of Andes bottom layers.

womens-sweatpants-product-page.webp__PID:d7d6b6b7-668a-4580-a5ce-db1de9789be6
womens ecological sweatpants midweight color navy blue

NATURAL HIGH-PERFORMANCE

Sweatpants for Active Comfort

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

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 →

Comparison graph alpaca wool vs merino vs polyester vs rayon vs cotton

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

womens low impact dye sweatpants midweight color navy blue

Free U.S. Shipping
& Returns →

Compostable
Packaging

Gift Cards
& Vouchers

Frequently Asked
Questions →

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

Women's Alpaca Wool Jacket

420 Midweight Full-Zip

from $260

Women's Alpaca Wool Long Sleeve Shirt

160 Ultralight

from $85

Women's Alpaca Wool Panties

160 Ultralight

from $40

Customer Reviews

Based on 7 reviews
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A
Amelia Eckles
Good Quality Alpaca, Poor Attention to Detail

My sweatpants arrived with a hole in the pocket. I sent multiple emails to customer service and never received any reply. Given the price, I was hoping for better attention to detail and quality control. The alpaca itself is warm and very cozy.

T
Taylor Prosacco
Very soft pants.

Very soft pants. Good seller.

R
Rhonda Koldehoff
Amazing Alpaca

I have numerous alpaca sweaters and was thrilled to find these alpaca sweat pants. This my second order from Arms of Andes. My first order was an alpaca quarter zip top. I was so impressed with quality of the fabric and workmanship that I wanted some bottoms to go with it. I will definitely be ordering from this company again.

L
Lauren Roop
Incrediable

Strong wicks keeps warm and regulates. I love the fact I don't have to do as much laundry as fast with Alpaca furr

S
Sara Ruecker
Very nice quality.

Very nice quality. These are about the same weight as thick sweatpants.

12