Alpaca vs merino: where they come from
Alpaca is a camelid from the Andes, and Peru produces most of the world's alpaca fiber. The fiber is partly hollow (medullated), smooth and almost free of lanolin. Merino is a sheep breed that grows very fine wool with lots of natural crimp and lanolin, which is washed out during processing.
Both are soft natural fibers, but they behave very differently on the needles and in the finished garment.
Alpaca vs merino wool: comparison chart
| Alpaca | Merino | |
|---|---|---|
| Origin | Andean camelid (mostly Peru) | Merino sheep (Australia, South America, Europe…) |
| Microns (approx.) | Baby alpaca up to ~22.5; superfine ~25–26.5 | ~17–24 |
| Warmth | Very high for its weight | High |
| Weight | Light for the warmth it gives | Somewhat denser for the same warmth |
| Elasticity and memory | Low: garments can stretch and grow | High: bounces back to shape |
| Stitch definition | Soft, slightly blurred; can develop a halo | Crisp, with clear texture |
| Drape | Fluid; heavy in large garments | Bouncy and more structured |
| Lanolin / itch | Virtually no lanolin; usually low itch | Contains lanolin (reduced by scouring); fine grades are low itch |
| Pilling | Can pill with friction | Can pill, especially very fine grades |
| Care | Hand wash, dry flat | Hand wash (unless superwash), dry flat |
| Best for | Relaxed sweaters, shawls, scarves, next-to-skin wear | Cables, textures, hats, socks, fitted garments |
Is alpaca warmer than merino wool?
Generally, yes: alpaca is warmer for the same weight. Its partly hollow fiber traps air, so an alpaca sweater is usually warmer and lighter than a sheep's wool sweater of similar thickness. That said, real-world warmth also depends on yarn weight, fabric density and stitch pattern: a thick merino knit at a tight gauge can be as warm as a fine alpaca knit loosely.
Which itches less, alpaca or merino?
Itch comes mostly down to fiber diameter: the finer the fiber, the less you feel it on your skin. Fine merino and baby alpaca sit in similar ranges, so both are usually comfortable. The difference is that alpaca contains virtually no lanolin, which some people with wool sensitivity react to, so many find it more comfortable. If you have a real allergy, knit a swatch and wear it against your skin for a few hours before starting your project.
To dig deeper into alpaca grades, read what is baby alpaca. And if you're choosing between sheep's wools, see our comparison of Highland wool vs merino.
Why alpaca-merino blends work so well
Alpaca brings warmth, lightness and a silky hand; merino brings elasticity and memory. Together they cover each other's weak spots: the garment is warm without being heavy, cuffs and necklines hold their shape, and stitches look more defined than in pure alpaca. That's why blends are a great choice for sweaters you don't want to grow, hats that need to hug your head, and cables and textured stitches.
Alpaca vs cashmere
Cashmere comes from the soft undercoat of certain goats and is usually very fine (roughly 14–19 microns), with an extremely soft hand and good insulation. On the other hand, it's typically more expensive, more delicate and pills easily. The finest alpaca grades come close to cashmere's softness and tend to be more durable, while merino is the most practical for everyday wear. So in the merino vs alpaca vs cashmere question: cashmere for luxury, alpaca for warmth and softness, merino for structure and easy wear.
Which should you choose? By project
- Oversized sweater or cozy cardigan: alpaca or an alpaca-merino blend.
- Fitted or ribbed sweater: merino or a blend, so it won't sag.
- Cables and textures: merino or a blend; pure alpaca softens them.
- Scarves and shawls: alpaca, for its drape and warmth.
- Hats: a blend or merino, which fit snugly.
- Baby clothes and sensitive skin: baby alpaca or fine merino; always test a swatch.
- Socks: merino with some reinforcement rather than pure alpaca.
With pure alpaca, knit at a slightly firmer gauge, choose patterns with structure and always dry flat: never hang it.
Our yarns: ROW BY ROW and TWIST
If you want pure alpaca, ROW BY ROW is 100% Peruvian baby alpaca in DK weight (1.76 oz / 123 yds, US 4–7 needles), in 11 colors. It arrives in November and is ideal for next-to-skin garments.
And if a blend sounds right, our new TWIST yarn arrives at the end of December: 40% superfine alpaca, 40% merino wool and 20% Cashtyle (a synthetic fiber), 50 g / 109 yds, worsted/aran weight, for US 7–9 (4.5–5.5 mm) needles. It combines alpaca's warmth and silky hand with merino's elasticity, made for sweaters, hats and scarves that keep their shape, plus cables and textures.
FAQ
Is alpaca warmer than merino?
For the same weight, usually yes, thanks to its partly hollow fiber. Yarn weight and fabric density still make a big difference.
Which itches less, alpaca or merino?
Both are low itch when the fiber is fine. Alpaca has virtually no lanolin, so many people with wool sensitivity find it more comfortable; if you have an allergy, test a swatch first.
Which pills less?
Both can pill with friction. Tightly plied yarns and firmer fabrics pill less; remove pills with a sweater comb or fabric shaver.
Does an alpaca-merino blend stretch out?
Much less than pure alpaca, because merino adds memory. Still, dry it flat and store it folded.
Alpaca or cashmere?
Cashmere is very soft but more delicate and pricier; fine alpaca offers similar warmth and softness and is usually more durable.