Comfort starts next to your skin
Alpaca wool brings breathable comfort to your first layer. Wash intimate apparel after wear to keep it clean; natural odor resistance doesn't replace regular care.
Long days start with your first layer. These men's boxer briefs use breathable, 160 g/m² Alpaca wool fabric in a fitted cut that sits close beneath your everyday or hiking clothes.
Free US shipping on orders over $200.
Final sale for hygiene reasons. This intimate apparel can't be returned or refunded. Defective-item claims are handled separately under our warranty.
Your layer starts with Alpaca wool from Peru. Its smooth fiber surface gives the knit a soft feel, while the knit structure allows air to move through as you do.
The fitted cut keeps the layer close to your body beneath hiking pants or everyday clothes.
The light knit lets air move through, giving you a comfortable layer as you go from everyday miles to a change of pace.
Use your body measurements to choose your size. These are body ranges, not flat garment measurements.
| Size | Waist | Hips |
|---|---|---|
| S | 28 - 31 in | 33 - 35 in |
| M | 31 - 34 in | 35 - 38 in |
| L | 34 - 36.5 in | 38 - 40.5 in |
| XL | 36.5 - 39.5 in | 40.5 - 43 in |
| XXL | 39.5 - 42 in | 43 - 46 in |
| Size | Waist | Hips |
|---|---|---|
| S | 72 - 79 cm | 84 - 89 cm |
| M | 79 - 86 cm | 89 - 96 cm |
| L | 86 - 93 cm | 96 - 103 cm |
| XL | 93 - 100 cm | 103 - 110 cm |
| XXL | 100 - 107 cm | 110 - 117 cm |
Hand wash or machine wash on a gentle/wool cycle in cold water (50-68°F). Use a mild wool-safe or pH-neutral detergent. Wash with similar colors. Don't bleach or use fabric softener.
Reshape while damp and lay flat to dry. Don't tumble dry, twist, or wring. Cool iron if needed. Store folded in a cool, dry space with airflow; avoid hanging.
Naturally dyed colors can transfer with sweat or friction. Wear them with dark clothing or equipment, wash sparingly, and avoid citric acid, which can lighten the color.
US orders over $200 ship free. Estimated US delivery is 7 to 10 business days, including preparation and transit. You'll receive a tracking number by email once your order ships. International rates are calculated at checkout; estimated delivery is 10 to 20 business days. Customs duties and import taxes are your responsibility.
Alpaca wool brings breathable comfort to your first layer. Wash intimate apparel after wear to keep it clean; natural odor resistance doesn't replace regular care.
Designed and made in one country
Arms of Andes is a family company with roots in the Peruvian Andes. “Arms” brings together the initials of four siblings. That connection to Peru shapes what we make and where we make it.
From fiber sourcing and yarn spinning to knitting and sewing, production stays in Peru. One country, with the people and knowledge behind your gear close together.
They fit small. I normally am a large and they were very tight. No returns on underwear.
Love the fabric, but the fit makes me sad. No support or much consideration for anatomy. Please give the design the same level of attention as the material.
Ultralight. Moisture wicking. No itching. Very little odor, especially relative to other fabrics. What more can one desire in a backpacking brief? Only two complaints are that the fabric is delicate and these are pricey for undies. Even after handwashing these, they lasted about 1 season only (around 20 hand washing sessions) before they started to develop thin spots and then holes. Wash very delicately and maybe they will last you longer.
Hi Sherpa, thank you for taking the time to share your experience. We’re really glad to hear they worked well and were comfortable to wear on the trail. We also appreciate your honest feedback, comments like yours are very helpful. Thanks again for your support!
I've bought quite a few wool (alpaca and sheep) underwear, and these had the worst durability. I wash all of them the same: cold water, low heat. Smartwool broke down after 31 washes, Woolly has survived 65 with no issues, but these fell apart after only 7 washes. The fabric under the crotch is single layer, and it developed multiple tears really quickly. I liked the shirt I got from here, but I don't believe their underwear is worth your time or money until they double up the fabric in weak areas.
I ordered a 5 pack of these, opened the package and was disappointed to find that the inseams were about 1-2" which clearly would ride up and be uncomfortable with any type of movement, and the waist band is not seamless — it has a large vertical bar tack stitch which is more than 3/16" in thickness and presses into your right side.
I communicated my disappointment here and asked for a return and was denied several times despite my best efforts in communication because I OPENED THE PACKAGE to see the garment. The garments were in perfect unworn condition as they originally specified, but upon emailing them photos of the garments per their request, they replied stating that because the package was opened they were unreturnable.
I think this is a massive failure on their part that it is basically impossible to see the garment without it being final sale. I'm now out $200 and am trying to figure out what to do with the material because they're not wearable for an active person like myself. If I could upload photos of the garments I would just so other people wouldn't fall into this same pitfall.
The second you open the package it is impossible to return, so buyer be ware.
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