• womens ecological baselayer half zip color black

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials

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

Materials
  • womens ecological baselayer half zip color black

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens best fleece baselayer half zip color black

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens most comfortable baselayer half zip color black

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens warmest baselayer half zip color black

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens temperature regulate baselayer half zip color black

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens functional baselayer half zip color gray

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens highly breathable baselayer half zip color gray

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens outdoor activities baselayer half zip color gray

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens ultimate outdoor baselayer half zip color gray

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens wool baselayer half zip color gray

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens breathable baselayer half zip color navy blue

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens warmest baselayer half zip color navy blue

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens single origin baselayer half zip color navy blue

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens sustainable baselayer half zip color navy blue

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • womens sustainable baselayer outdoor half zip color navy blue

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • women breathable alpaca wool baselayer half zip lightweight color natural blue

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • women sustainable alpaca wool baselayer half zip lightweight color natural blue

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • women ecological alpaca wool baselayer half zip lightweight color natural white

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials
  • women moisture wicking alpaca wool baselayer half zip lightweight color natural white

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials

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

    Materials

    Fabric: 100% Royal Alpaca Wool
    Fabric Dye: Natural Plant-Based
    Fabric Finishing: Silicone (OEKO-TEX)
    Thread Dye: Natural
    Label: 100% Organic Cotton
    Label Ink: Synthetic (GOTS)

    Materials

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

Materials

Women's Alpaca Wool Base Layer

300 Lightweight Half-Zip

Women's Alpaca Wool Base Layer: 300 Lightweight Half-Zip

$233.41

$175.06

$233.41 $233.41
0% OFF

25% OFF

Low Impact Dyes:
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Women's Alpaca Wool Base Layer: 300 Lightweight Half-Zip

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Product weight (medium): 11 oz / 290 gr

Product shown in size S on model (Ht: 5'7", Chest: 35", Hips: 37")

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

The Warmest Base Layer

Our all-purpose women's base layer has a versatile design that looks elegant in the city but is constructed for all outdoor activities. Our wool top can be worn as a wool ski sweater in the winter or a breathable hiking base layer in the summer. Made from 100% Alpaca Wool, our base layer feels soft & light and has a half-zip for added temperature regulation.

womens-half-zip-product-page.webp__PID:f67fa160-ed16-4ef7-80c6-06f45a24985c
womens functional baselayer half zip color gray

NATURAL HIGH-PERFORMANCE

Highly Breathable Base Layer

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

Natural Base Layer

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

DISCOVER OUR SUSTAINABILITY

alpaca wool baselayer half zip lightweight natural blue woman

Free U.S. Shipping
& Returns →

Compostable
Packaging

Gift Cards
& Vouchers

Frequently Asked
Questions →

SINGLE ORIGIN SUPPLY CHAIN

Where Was This Base Layer 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 Leggings

300 Lightweight

from $105

Women's Alpaca Wool T-Shirt

160 Ultralight Crew Neck

from $75

Women's Alpaca Wool Panties

160 Ultralight

from $40

Customer Reviews

Based on 7 reviews
71%
(5)
29%
(2)
0%
(0)
0%
(0)
0%
(0)
H
Heather Rigby
Worth the wait

It took a couple months for this order to be filled, seems like A of A has production/inventory issues on a regular basis. But they produce high quality clothing. This half zip sweater has a beautiful smooth woven finish, unlike other alpaca sweaters that have a lot of loose fibers that shed a lot. I love the navy blue color also. The reason why I left off one star is that, despite claims to the contrary, I still find the wool to be a little bit irritating. Not enough to stop wearing it, but the sensation is there and I do my best to tolerate it because I like to wear natural fibers.

A
Amanda
I love it!

Love the benefits of alpaca wool.

K
KAREN GARMIRE

Cozy warm! Size runs small

F
Frank Fiato
Great all the way around

Great service and really good product. I will definitely be buying more

S
Shelly Boyce
It is very soft.

It fits well except for the sleeves. I would like them to taper a little bit. Other than that I like it.

12