Wool vs. Merino Wool: What's the Difference?

People ask me this a lot, usually holding up two sweaters that look nearly identical. Both are wool. Only one is merino. Here's what actually separates them.

It's still wool

Merino isn't a different material from wool — it's a specific breed of sheep. "Wool" is the broad category, the way "cotton" is a category. Merino is one type within it, similar to how Pima is a type of cotton. The difference comes down to the fiber itself.

Fiber thickness is the whole story

Regular wool fibers run thick — usually 30 microns or more. Merino fibers run much finer, often under 20 microns. That thinness is what makes merino soft against skin instead of itchy. Thicker wool fibers are more rigid, so they poke and irritate. Thinner fibers bend easily, so they don't.

This is also why merino works next to skin — as a base layer, a turtleneck, something worn close — while heavier wool is better suited to outerwear, rugs, or anything with a layer between it and you.

Merino breathes and regulates differently

Fine merino fibers manage moisture and temperature better than coarse wool. It pulls moisture away from the body, resists odour longer between washes, and keeps you warm without the weight you'd expect. That's part of why it's the fiber I reach for on pieces meant to be worn often, not just for looks.

Merino is more delicate to care for

Because the fibers are so fine, merino needs a gentler hand — cold water, wool shampoo, no wringing. Heavier wool can sometimes tolerate more, but I treat all of it the same way, carefully. Here's exactly how I wash it.

What I use, and why

Most of my knitwear is merino, sometimes blended with cashmere or alpaca for extra softness and drape. It's a fiber that feels considered — fine enough to wear all day, warm enough to matter, and it holds its shape piece after piece.

Full care instructions for every piece are always here: givehgiveh.com/pages/care

— Parinaz