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100% Alpaca

Alpaca vs Merino, Fiber for Fiber. Here’s Where Merino Falls Short.

Semi-hollow core fiber traps more heat at a lighter weight, resists the pilling that wears out merino, and carries 8 to 10 times less lanolin.

HIGHER WARMTH-TO-WEIGHT  •  MORE DURABLE FIBER  •  8 TO 10X LESS LANOLIN

8 to 10 Times Less Lanolin. Raw Alpaca carries under 3% lanolin versus up to 25% in raw merino fleece.

Higher Tensile Strength. Built to resist the pilling and premature wear that are the top complaint about merino.

Single-Origin Peru. The only 100% Alpaca outdoor apparel brand, from the Andes to your back.

More Warmth, Fewer Grams
Warmth-to-Weight

More Warmth, Fewer Grams

Alpaca fiber has a semi-hollow core, so it traps more heat at a lighter weight than merino. That is the whole reason one layer can do more.

  • ThermoregulatingStays comfortable across a wider temperature swing than merino, so one layer covers more conditions.
  • Lightweight WarmthInsulates without the extra bulk merino needs to keep up.
Day Two Is Where Merino Starts to Smell
Day Two and Beyond

Day Two Is Where Merino Starts to Smell.

A common complaint about merino: it still smells by day two. Alpaca is naturally odor-resistant and goes more days between washes.

  • Odor-Resistant by NatureResists the causes of odor through back-to-back wears, not just the first one.
  • Wear More, Wash LessFewer washes and fewer garments needed between trips.
Drier Through the Effort
High Output

Drier Through the Effort

Alpaca absorbs less water than merino, dries faster, and resists getting soaked through when the effort picks up.

  • Moisture-WickingPulls sweat away and dries fast, even through high-output stretches.
  • Absorbs Less Than MerinoTakes on less moisture than merino fiber, so garments stay lighter and dry quicker.
Built to Outlast Merino
Wash After Wash

Built to Outlast Merino

Pilling and premature holes are the top complaint among merino buyers. Alpaca fiber has higher tensile strength, built to hold up wash after wash.

  • Resists PillingAlpaca fiber resists the pilling and thinning that wear down merino garments.
  • More Seasons per PieceFewer replacements, more seasons out of the same garment.
Near-Zero Lanolin, No Itch
Next-to-Skin Comfort

Near-Zero Lanolin, No Itch

Raw merino fleece can carry up to 25% of its weight in lanolin. Raw Alpaca carries less than 3%, roughly 8 to 10 times less, almost no wool grease at all.

  • Gentler on Sensitive SkinLess lanolin means less itch and less chance of irritation against bare skin.
  • Smoother Fiber SurfaceLower, flatter scales than merino, so less prickle against bare skin.
What Changes at the Fiber Level

Not the Eco Alternative. The Performance Upgrade.

Merino is everywhere, and mainstream merino gear is often blended with nylon or elastane just to hold up. Even then, it is still known for the same three complaints: pilling within a season, odor by day two, and itch against sensitive skin.

Alpaca fiber solves this at the source. More warmth for less weight, a stronger fiber for durability, and 8 to 10 times less lanolin for softness. It is the performance upgrade for anyone who has already tried merino and walked away disappointed.

Arms of Andes is the only 100% Alpaca outdoor apparel brand. Single-origin, from the Andes to your back.

The Full Comparison

Alpaca vs Merino, Side by Side

The fiber-level differences that carry through into everything above.

AlpacaMerino
Warmth-to-WeightHighModerate
Odor ResistanceNaturally ResistantSome Resistance, Often Smells by Day Two
Moisture ManagementAbsorbs Less, Dries FastAbsorbs More, Dries Slower
DurabilityStronger Fiber, Resists PillingProne to Pilling and Holes
Lanolin ContentUnder 3%Up to 25%
Feel on SkinSoft, Minimal ItchCan Itch
OriginSingle-Origin, PeruOften Blended, Mixed With Synthetics
Market PositionOnly 100% Alpaca Outdoor BrandWidely Available

Based on fiber-level performance. Individual results vary by garment weight and construction.

The 160 Ultralight Line

Shop the Difference

Everyday essentials in 100% Alpaca. No blends, no synthetics in the fiber, just the wool that outperforms merino.

Prices shown are current store prices, no code needed. Colors and sizes available on each product page.

I really notice the difference compared to Merino wool in the warmth and climate control department.

Rick G.

Outstanding keeps you warm but you don’t over heat while working.

Sergio G.

Cool for Summer and warm for Fall, even some winter temps!

David S.
Hear the Difference

Real Wearers, Real Comparisons

Straight from people who made the switch from merino to 100% Alpaca.

The Minimalist Angle

One Layer, Every Condition

Alpaca stays comfortable across a wider temperature swing than merino, so fewer garments cover more conditions.

Running in 100% Alpaca

Wear More, Wash Less

Naturally odor-resistant and gentler on skin, so the same piece works for longer stretches without needing a wash.

  • Fewer washes, fewer garments
  • Odor-resistant through back-to-back wears
  • Softer on skin, minimal lanolin
Built for Wider Conditions

Built for Wider Conditions

One 100% Alpaca layer traps heat when it drops and breathes when it climbs, versus reaching for a different merino piece for every shift.

  • Thermoregulating across a wider range
  • Higher warmth-to-weight than merino
  • Stronger fiber, built to last

Same Trail. Fewer Layers. Fewer Washes.

The only 100% Alpaca outdoor apparel brand. Single-origin Peru, built to outperform merino.

Shop 100% Alpaca

Colors and sizes available on each product page. While stock lasts.