This page contains Amazon affiliate links. As an Amazon Associate I earn from qualifying purchases.
Cashmere is usually softer and loftier; merino is usually tougher, easier to wash and better for active use. Both are fine animal fibers, both keep you warm, and both can be excellent or disappointing depending on fiber length and how the yarn is made. The label alone does not tell you which sweater will last.
I have spent 14+ years in textile dyeing and fabric development, and protein fibers like wool and cashmere are the ones a dyehouse treats with most care. Here is how the two really compare, fiber by fiber.
Merino vs cashmere at a glance
| Merino wool | Cashmere | |
|---|---|---|
| Comes from | Merino sheep (fleece) | The soft undercoat of cashmere goats |
| Typical fiber diameter | About 15–24 microns (superfine is under about 19.5) | About 14–19 microns |
| Feel | Smooth and soft at fine grades | Very soft, with a silky, lofty handle |
| Warmth for weight | High | Very high; feels warmer at the same weight |
| Pilling | Low to moderate | Moderate to high, especially short-fiber cashmere |
| Durability | Good; resists stretching and wear | More delicate; better for casual wear |
| Odor resistance | Excellent | Good |
| Washing | Often machine-washable (superwash) | Usually hand wash |
| Price | Moderate | High |
| Best for | Everyday sweaters, base layers, travel, sport | Luxury knitwear, scarves, cold-weather comfort |
Where the two fibers come from
Merino is a breed of sheep developed for fine wool. Its fleece is sheared once a year, and the finest grades are used for next-to-skin garments. Cashmere comes from the downy undercoat that cashmere goats grow for winter. It is combed or sheared in spring and then separated from the coarser guard hair. A single goat yields only a small amount of usable fiber each year, which is a large part of the price.
Softness: it is about microns
Softness depends mainly on fiber diameter, measured in microns. The finer the fiber, the more it bends when it touches your skin instead of prickling. Fine cashmere sits at the soft end of the range, and superfine merino comes very close. A coarse, cheap cashmere can feel worse than a good superfine merino, so compare quality, not just fiber names.
Warmth
Cashmere’s fine, crimped fibers trap a lot of still air, so a cashmere sweater usually feels warmer than a merino one of the same weight. Merino is still very warm, and because it handles moisture well, it often feels more comfortable when you are active and sweating.
Durability and pilling
Merino fibers are generally longer and more resilient, so merino knitwear tends to hold its shape and resist wear better. Cashmere pills more, especially when it is spun from short fibers that can work loose. Our guide to the best crew neck cashmere sweaters explains how ply and gauge affect wear.
Odor and moisture
Both fibers absorb moisture vapor into the fiber itself and resist odor better than synthetics. Merino is the standard for base layers and travel clothing because it handles sweat, repeated wear and frequent washing well. See our guide to the best merino base layers for men.
Care
- Merino: check the label; superwash merino can go on a cold wool cycle. Untreated merino should be hand washed.
- Cashmere: hand wash in cool water with a wool shampoo and dry flat. Our step-by-step guide: how to wash a cashmere sweater.
- Both: never tumble dry, never use enzyme (bio) detergent, and store folded and clean to keep moths away.
Which should you buy?
- Choose merino for daily office sweaters, travel, layering, hiking and anything you want to machine wash.
- Choose cashmere for the softest, warmest feel in a relaxed sweater you will wear carefully.
- Consider a blend (merino-cashmere) if you want some cashmere softness with more durability.
Shopping now? See the best merino wool sweaters for men.
Frequently asked questions
Usually, at the same weight. Cashmere’s fine, crimped fibers trap more still air. Merino is still very warm and handles sweat better during activity. Superfine merino comes close, but good cashmere is generally softer. Fiber fineness matters more than the fiber name. Merino generally lasts longer and pills less. Cashmere needs more careful wear and washing. Superwash merino can often go on a cold wool cycle. Most cashmere should be hand washed unless the label says otherwise.Is cashmere warmer than merino wool?
Is merino wool as soft as cashmere?
Which lasts longer, merino or cashmere?
Can you machine wash merino and cashmere?