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.
Women's Alpaca Wool Base Layer Half-Zip
$267.08
/
4.6Rated 4.6 out of 5
13 reviews
Set off warm, then open the neckline as you climb. This women's 300 g/m² Alpaca base layer gives you a half zip for ventilation and a fitted cut for layering.
Free US shipping on orders over $200.
Return unused, unwashed items within 15 days of delivery. Return fees may apply.
Zip up for the start. Open up on the climb.
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
-
Adjust without changing layers
The half zip lets you open the neckline as your effort increases, then close it when you stop.
-
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
- Hiking
- Backpacking
- Cold-weather travel
Not for
- For wind or rain, add a weatherproof outer layer.
Product details
What goes into your layer
- Fabric100% Alpaca wool
- Thread100% cotton
- Labels100% organic cotton
- DyesNatural or OEKO-TEX certified, depending on the color. Undyed colors have no added dye.
- Label inkGOTS certified
- ClosureHalf zip
Specifications
- Fabric weight300 g/m²
- Weight260 g / 9.2 oz in size S
- ConstructionLong-sleeve base layer with a half-zip neckline
- FitFitted cut with natural stretch
- Made inPeru
Size & fit
Use your body measurements to choose your size. These are body ranges, not flat garment measurements.
| Size | Chest | Waist |
|---|---|---|
| XS | 31 - 33.5 in | 23 - 26 in |
| S | 33.5 - 36 in | 26 - 29 in |
| M | 36 - 39 in | 29 - 31.5 in |
| L | 39 - 42 in | 31.5 - 34 in |
| XL | 42 - 45 in | 34 - 37 in |
| XXL | 45 - 47 in | 37 - 40 in |
| Size | Chest | Waist |
|---|---|---|
| XS | 79 - 85 cm | 59 - 66 cm |
| S | 85 - 92 cm | 66 - 73 cm |
| M | 92 - 99 cm | 73 - 80 cm |
| L | 99 - 106 cm | 80 - 87 cm |
| XL | 106 - 113 cm | 87 - 94 cm |
| XXL | 113 - 120 cm | 94 - 101 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.
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.
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.
Request your return within 15 days of delivery. Items must be unused and unwashed. Original packaging isn't required. A $5 return shipping fee is deducted from domestic refunds unless you purchased Free Returns at checkout. International customers pay return shipping, except for wrong or defective items covered by the policy.
Why Alpaca wins
Designed and made in one country
Peru, start to finish
A family company
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.
Peru, start to finish
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.
Customer Reviews
4.62
Based on 13 reviews
W
I’ve been wearing and sleeping under Alpaca fabric for years, so when a baselayer needs to be replaced there’s only one fabric choice to make: Alpaca.
B
Love the fit and comfort and warmth.
L
This top has a shaped, athletic fit that’s more tailored than boxy. I find the sizing runs small — I’m 5’1″ and 117 pounds and usually wear a small, but sized up to a medium for a more comfortable fit. Most outdoor tops run long on me, both in the body and sleeves, but this top hits just the right length in both. The fabric’s natural stretch lets it move comfortably with me on the trail, and the slim zipper provides easy ventilation without adding bulk or interfering with layering.
The construction and fabric feel very high quality, with clean lines and flat-lock seams for a smooth feel. It has a lightweight yet substantial feel, with a silky softness from natural lanolin in the alpaca fiber. It can still feel a bit itchy next to skin for those sensitive to wool (like me). Due to this, my preference has been wearing it as a mid-layer with a thin synthetic base underneath. I find this method adds warmth without the weight of a bulky fleece, and I don’t get overheated as easily.
Overall, I really like the way this top performs, and from now on, this will be my one of my top layer picks for hiking and camping in cooler weather.
N
Love it. Love the color. Love the half zip.
Hi Nimai,
Thank you so much for your feedback!
We’re glad to hear you’re loving it. Enjoy every comfy moment!
A
I am revamping my performance clothing, moving towards wool and away from plastics. Unlike other wool topss I have, this one is unfortunately itchy. But seemingly less so the more I wear it (perhaps I'm merely getting used to it?). My biggest complaint is that it is too short. It comes untucked in back when I sit. And I have a short waist. Otherwise, it performs well. It kept me warm on a vigorous hike in 30-degree weather. I like the long zip neck which helps ventilate and the sleeve length is perfect. It is a quality product, just don't like the itch and length, as other posters have stated.
Hi there! Thanks so much for your thoughtful feedback, we really appreciate you taking the time to share your experience as you transition to more natural performance fabrics.
We're glad to hear the zip neck and sleeve length worked well for you, and that it kept you warm during your hike, that's exactly what it's built for! That said, we're sorry to hear the fabric felt a bit itchy and the length wasn't quite right for your needs. Some people do find alpaca softens over time with wear and washing, but sensitivity varies.
We're constantly refining fit and feel based on feedback like yours, so your notes on the back length and fabric feel are incredibly helpful as we work to improve. Thanks again!
