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Fabric: 100% 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% Alpaca Wool
Label Ink: Synthetic (GOTS)

Materials
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Fabric: 100% 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% Alpaca Wool
Label Ink: Synthetic (GOTS)

Materials

Men's Alpaca Wool Boxer Briefs

160 Ultralight

Men's Alpaca Wool Boxer Briefs: 160 Ultralight

Regular price

¥6,765

Regular price ¥6,765 Sale price ¥6,765
0% OFF
Low Impact Dyes:
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Men's Alpaca Wool Boxer Briefs: 160 Ultralight

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Product weight (medium): 24 oz / 67 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.*

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mens warmest boxer briefs color gray
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Men's Alpaca Wool T-Shirt

110 Ultralight

¥6,765
🌱  Leave No Trace Apparel
Not in Stock? Email us

Alpaca vs Merino

Fabric Care

FREE SHIPPING* & Returns

LESS WEIGHT, LESS WASHING

The Perfect Underwear for Hiking

Our 100% Alpaca Wool lightweight and breathable Boxer Briefs are designed to keep you clean and dry on your adventures. Moisture-wicking and low moisture absorption properties repel odor causing bacteria, which, helps minimize laundering, making it the perfect travel underwear. The benefits of alpaca fibers combine temperature regulation, quick drying and durability. These wool boxers are made to help keep you dry and clean during all activities.

men's alpaca wool boxer brief
mens high sweat wicking boxer briefs color navy blue

NATURAL HIGH-PERFORMANCE

Sweat-Wicking Underwear

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

mens high sweat wicking boxer briefs color navy blue

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 Boxer Briefs

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 Boxers 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

mens antibacterial baselayer half zip color black
mens ecological baselayer half zip color black
mens low impact dye baselayer half zip color black
mens natural baselayer half zip color black
mens royal alpaca baselayer half zip color black
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mens lightest thermal baselayer half zip color navy blue
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mens all activities baselayer half zip color gray
mens functional baselayer half zip color gray
mens low impact dye baselayer half zip color gray
mens outdoor baselayer half zip color gray
mens thermal wool baselayer half zip color gray
mens base layer color natural blue
mens base layer color natural gray
mens base layer color natural gray
mens base layer color natural white
mens antibacterial baselayer half zip color black
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mens low impact dye baselayer half zip color black
mens natural baselayer half zip color black
mens royal alpaca baselayer half zip color black
mens best hiking baselayer half zip color navy blue
mens adventure baselayer half zip color navy blue
mens lightest thermal baselayer half zip color navy blue
mens most sustainable baselayer half zip color navy blue
mens best outdoor baselayer half zip color navy blue
mens all activities baselayer half zip color gray
mens functional baselayer half zip color gray
mens low impact dye baselayer half zip color gray
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mens thermal wool baselayer half zip color gray
mens base layer color natural blue
mens base layer color natural gray
mens base layer color natural gray
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mens half zip color black
mens half zip color gray
mens half zip color navy blue

Men's Alpaca Wool Base Layer

300 Lightweight

from $135

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mens uv resistance joggers lightweight color black
mens antiodor joggers lightweight color black
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mens comfortable fit joggers lightweight color gray
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mens alpaca wool jogger color navy blue
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Men's Alpaca Wool Joggers

300 Lightweight

from $130

Customer Reviews

Based on 27 reviews
67%
(18)
15%
(4)
7%
(2)
4%
(1)
7%
(2)
P
Phil Holland
Ehhhh....

While I do like the look and feel of the garment, I did have a seam split the first time I wore them. Hole is large enough for 2 fingers to fit through. I pre-ordered the basement and expected shipping in October. In November I enquired about not having been received and was told they would ship shortly, and garment was shipped 2 weeks later. I like the product, but don't think I will repurchase from Arms of Andes.

Hi Phil,
Thank you so much for your feedback, and we sincerely apologize for the issue you experienced with the seam. We truly appreciate your support and your input, as it helps us improve our products and services.

D
Dave Gore
High comfort, long-lasting

After many months of use I've been so pleased with this alpaca wool boxer brief I've now purchased three more. They are a great value considering how durable they are and how long they last before I need to wash them. I really appreciate the soft feel - no itching or chafing - and the great fit they provide. My only knock is that they don't have a fly. I'd replace my other (merino) boxers altogether if Arms of Andes made a boxer with fly. I use these alpaca boxers mostly for trail and road running plus hiking and backpacking and love the fact that they don't stink even after multiple days of use. Plus, they retain their shape and are fresh-as-new after laundering. Great product!

Hi Dave! Thank you so much for your detailed feedback! We're thrilled to hear that you're enjoying the alpaca wool boxer briefs and that they've been holding up well for all your outdoor activities. We really appreciate your suggestion about adding a fly to the design, and we'll definitely take it into consideration for future designs. It's great to know that they perform so well for trail running, hiking, and backpacking! Thanks again for your support and for choosing our products.

T
Timothy Ewald
Sizing way off

Based on sizing guidelines, I ordered sized medium boxer briefs (which is also in line with what I’d buy from other companies). When they arrived a couple weeks later, I went to try them on and couldn’t even get them past mid-thigh. They weren’t a little tight - they were WAY off. It makes me question the sizing guide and future purchases. Additionally, the whole “free returns” we’ve become accustomed to does not apply - expect to pay for shipping & handling and a processing fee. Overall not a great experience and I likely won’t be ordering from them again.

All that being said, the customer service folks were very pleasant and professional in communicating with me. I hope they can get the sizing issues figured out.

Hi Timothy! We apologize for the sizing issues you experienced with your recent order. We appreciate your feedback and are actively working to improve our sizing and processes to ensure a better shopping experience for our customers. We also understand your disappointment with the return process and fees. We are constantly reviewing our policies to make them as customer-friendly as possible. Thank you for your kind words about our customer service team. We value your feedback and hope you'll consider giving us another chance in the future.

E
Eric Funderburg
Great lightweight underwear

I was wearing brooks brothers boxers. They were Pima cotton. These are much softer and a little shorter. They are perfect. It’s like wearing nothing. And it’s so much softer than the Pima cotton. I’m definitely glad that I went all in and bought 8 pairs.

That's fantastic to hear! It sounds like you've found the perfect boxers for you. The softness and comfort of these compared to the Pima cotton must be a real game-changer. I'm so glad you went all in with 8 pairs—it’s always a win when you find something that feels just right. Thanks for sharing your experience!

J
Joel Mogen
Outstanding

Best pair of underwear I own. I like them better than my Duluth Trading Buck Naked for several reasons; they are made of Alpaca a much higher quality material, they don’t make me sweat, and they don’t stink.

Thank you for your feedback! We're thrilled to hear that you love our underwear. It's great to know that the high-quality Alpaca material, along with the comfort and odor resistance, has made a positive impact for you. We appreciate your support and look forward to providing you with more products that you enjoy.