Men's Alpaca Wool Sweatpants

420 Midweight

$409.25
5.0Rated 5.0 out of 5 24 reviews

Put on a heavier layer for cooler days. These men's sweatpants use 420 g/m² Alpaca wool fabric for full-length coverage from travel days to downtime at camp.

Low Impact Dyes

Black
Size: SSize guide

This size is currently out of stock. Get notified when it's back.

By placing your order you agree to purchase from Global-e as the merchant of record, subject to Global-e’s Terms and Conditions and Privacy Policy, and share your information with Arms of Andes.

Free US shipping on orders over $200.

Return unused, unwashed items within 15 days of delivery. Return fees may apply.

Settle into a heavier layer.

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.

Product info

  • More knit for your lower half

    The 420 g/m² fabric is heavier than our 300 g/m² jogger fabric, for cooler days and time at camp.

  • Warmth in the knit

    The knit holds air close to your body for insulation, while its open structure allows air to move through as your effort changes.

Perfect for

  • Cool-weather travel
  • Camping
  • Everyday wear

Product details

What goes into your layer
  • Fabric100% Alpaca wool
  • Thread100% cotton
  • Labels100% organic cotton
  • DyesOEKO-TEX certified for dyed colors.
  • Label inkGOTS certified

Specifications

  • Fabric weight420 g/m²
  • ConstructionFull-length sweatpants in a midweight knit
  • FitNatural stretch from the knit
  • Made inPeru
Size & fit

Use your body measurements to choose your size. These are body ranges, not flat garment measurements.

SizeWaistHipsInseam
S28 - 31 in33 - 35 in29.5 - 31 in
M31 - 34 in35 - 38 in31 - 32 in
L34 - 36.5 in38 - 40.5 in32 - 32.5 in
XL36.5 - 39.5 in40.5 - 43 in32.5 - 34 in
XXL39.5 - 42 in43 - 46 in34 - 37 in
SizeWaistHipsInseam
S72 - 79 cm84 - 89 cm75 - 78 cm
M79 - 86 cm89 - 96 cm78 - 81 cm
L86 - 93 cm96 - 103 cm81 - 83 cm
XL93 - 100 cm103 - 110 cm83 - 86 cm
XXL100 - 107 cm110 - 117 cm86 - 93 cm
Care for your layer

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.

Shipping & Returns

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.

Eligible unused, unwashed items may be returned within 15 days of delivery. What counts is that you start your request within those 15 days; how long the package then takes to reach us does not affect your refund. Original packaging isn't required. A $5 domestic return shipping fee applies unless Free Returns was purchased at checkout. International return shipping is paid by the customer, except for wrong or defective items under the policy.

Men's Alpaca Wool Sweatpants: 420 Midweight

The benefits

Why Alpaca wins

Alpacas en los Andes peruanos

Andes-adapted for changing temperatures

Alpacas evolved where days run warm and nights turn cold. Their semi-hollow fibers trap insulating air, helping you stay comfortable as the temperature changes.

Softness starts in the fiber

Alpaca’s smoother scales give the fabric a soft feel against your skin. Comfort comes from the fiber’s structure.

Wear more, wash less

Alpaca wool naturally resists odor. Air your layer between wears, then wash it when it needs cleaning. Less time doing laundry. More time outside.

Single origin

Peru, start to finish.

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.

Learn our story

Customer reviews

  • 5 stars: 23 (96%)
  • 4 stars: 1 (4%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
John Marks
Alpacamazing!!

Simply the best pair of sweatpants I have ever worn!! This pair is actually the second pair I purchased. I liked the first pair (Maroon) I had to get a second pair. Incredibly soft, and so warm. The quality is off the charts! Very happy to have found a company making top notch sustainable products as well providing good jobs for the local community. Keep up the great work.

D
Derick
Best sweatpants I've ever owned, currently considering getting another pair.

They're incredibly soft, easily good to 20F weather walking around outside if you're not being actively rained on. If you are, they work as an excellent layer under something else, although you may have easier fit with leggings.

J
Jack Mac
I love these

I will say I was a little hesitant in purchasing these. But after I received them, I found that they are the best “sweat” pants I have ever had. I do wish they had traditional pants as an option, but these are amazing.
Definitely get yourself some

J
John Tynes
Fit Better than I expected.

These sweatpants are very comfortable. I was worried the inseam would be too short for my height ;as I normally wear a 34/36 inseam, but was surprised these fit just fine and didn’t ride high over my ankles. These aren’t baggy sweats they fit to the body really well. It would be nice if they had a back pocket or leg pocket for my phone but overall I’m very pleased with them.

M
Mark Hicks
So comfortable!

These sweat pants are so comfortable and soft. Very warm, but not too warm. High quality. I have several pieces and love them all! Worth every penny. Really the only 100% alpaca option of this quality I have found on the market.

J
Josh
i’ve become an instant fan of the alpaca

i’ve become an instant fan of the alpaca

J
Jon Hendra
Really nice!

Love the fabric which is an excellent weight for New Mexico winters. Beautifully soft feel and a substantial amount of wind resistance being a real plus. Fit is a little baggy in my usual size. A draw string at the waist is a feature I would appreciate having as well as a bit more depth in the pockets. Looking forward to use over more seasons to test the versatility and durability. At this point very pleased with the purchase.

Hi Jon,

We’re so glad to hear you're enjoying your purchase! We’re always working on improving our products, so thank you very much for your feedback. We’ll make sure to take it into consideration.

If you ever have any more thoughts or suggestions, feel free to reach out – we’d love to hear from you!

A
Anonymous
Just as Advertised

Not the softest, but definitely the smoothest. I can comfortably wear these pants without underwear. I love how even the design is based in atavistic techniques, like not attaching drawstrings, buttons, elastics, or zippers; just a simple and much less fussy design. They are definitely warm, but relatively neutral feeling in hot weather. I do not like, however, that mine were shipped in plastic bags for some reason. I got mine in a bigger size to accommodate more room, but this does come at the risk of sagging if too many things are sitting in my pocket (not a negative, an observation).

Hi there! Thank you so much for your feedback! We’re glad to hear that you find the pants comfortable and appreciate the design.

We're sorry to hear about the bags—most of our packaging is made from compostable material, so it’s surprising to hear that yours arrived differently. We’ll look into this to ensure consistency in our packaging.

Thank you again for your observations and for sharing your experience. If you have any other questions or need further assistance, feel free to reach out!

f
feet banks
New favourite pants! Incredible

These alpaca sweatpants redefine comfort. soft, supple, but with a feeling of weight and strength. they breath when it is warm, they keep me warm when it is cold.
i can't take them off.
and i love that there are no plastics or chemicals.
best pants i own, by far.
feet

Thank you so much for your wonderful feedback! We're thrilled to hear that you're enjoying the alpaca sweatpants. It's fantastic to know that they provide the perfect balance of comfort, warmth, and breathability. The absence of plastics and chemicals is something we take great pride in, and we're delighted that you appreciate it. Enjoy your sweatpants, and thank you for sharing your experience!

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
LP
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.

D
Drusilla Montemayor
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.

R
Robert Weber
Great looking joggers

Delivered as promised. Great looking joggers

R
Robert Stevens
Midweight sweatpants

Delivered as promised. Great product

A
Austin Jameson
joggers

5'9" 170 lbs. Ordered a pair of the small midweight joggers. Loved them so much I ordered two more pairs. For my size and weight these gave a nice, fitted look, while not feeling to tight do the fabric quality/stretch. Best joggers I've ever had. Price truly matches the quality and feel here.

D
Dmytro Rochniak
Sono davvero funzionante

Dal primo giorno quando addossato sono inamorato. Morbide, piacente, bene contata con pelo e non ti fa irritare. Nella pioggia si bagna pero non ti fa raffreddare, anzi veloce si fa asciugare rispetto dal cottone. Il cotone quando si bagna va contato con pelle e ti fa gelare e sentire freddo. Alpaca invece quando si bagna va contato con pelle e ti fa riscaldare piacevole. Davvero si asciuga fulminante, a pochi minuti.
Una cosa che me volevo per questi pantaloni le tasche posteriori.

M
Maven Halvorson
Amazing quality and fit.

Amazing quality and fit super soft and warm

G
George Janikowski
Great stuff

I like it a lot.

J
Joseph Stern
A perfect sweatpant

I’m going to get more of these, they’re the best sweatpants I’ve ever worn!

T
Todd
Heavenly

Probably the most luxurious-feeling garment I've ever owned in my 55 years.

E
Enzo Martinelli
Better than I had imagined!

It's only been two weeks since these pants came in, but wow I'm impressed. Soft, thick material. Very comfortable and warm! I wish the inseam was maybe half an inch shorter in the size small that I purchased, but I'm considering getting another anyway. These haven't pilled yet (not sure if they will), but many of my cool and even some cashmere articles of clothing (joggers/sweatpants and hoodies) started pilling after a few uses. I'll update this review if it seems like the longevity isn't there, but I'm very happy thus far.

m
mark mooney
Soft, thick, warm...luxurious!

I live in the Pacific NW and wool, in my humble opinion, is a must for anyone that wants to be outdoors in the winter. It's cold, and rainy. Virtually 75% of my every day and outdoor clothing is merino wool. I got an ad in my email from Arms of Andes and after looking through their products decided to take the dive. I could not be happier. I bought the men's lounging pants (my name for them) and the heavy 1/4 zip shirt. I love them, absolutely love them. They are heavy duty and have become my morning clothes as i live in a 113 year old home that is chilly in the morning until the heat warms things up. I will be buying more from this company, for sure, and highly recommend them to anyone looking for quality, well priced Alpaca wool clothing!