What Is Sherpa Fabric? Warmth, Matting and Real Shearling

What is sherpa? In clothing, it's a synthetic pile fabric, usually polyester, made to look and feel like the woolly side of a sheepskin, with a bumpy, curly texture on one face and a smooth knit on the other. It lines denim jackets, hoodies, slippers and boots, and it covers the throw blankets that appear on every couch once October arrives.

It's also one of the most misunderstood fabrics in the store. Sherpa isn't wool, it isn't real shearling, and the way you wash it largely decides whether it stays fluffy or ends up flat and matted after a single winter.

What Is Sherpa Fabric Made Of?

Most sherpa is 100% polyester, often recycled polyester. Some is acrylic or an acrylic and polyester blend, and a few versions put a synthetic pile on a cotton or cotton blend backing. If you want to know how those fibers behave over time, our guides to polyester and acrylic cover them in detail.

The fabric starts as a knit with a raised pile. That pile is brushed, then treated with heat and tumbling so the fibers clump into small curls that mimic a sheep's wool. The back stays flat and smooth, which is why sherpa works so well as a lining. The textured side faces you, and the smooth side sits against the outer shell.

You'll see the same idea sold under other names. Teddy usually means a plusher, longer pile worn on the outside of jackets and coats. Borg is a common name for similar fabric, especially in the UK. Faux shearling is the most direct label of all, since it says exactly what the fabric is imitating.

The name has a real origin worth getting right. The Sherpa are an ethnic group from the high mountain regions of Nepal in the Himalayas, widely known for their mountaineering expertise. The fabric borrowed their name as a nod to warm clothing for cold mountain life, but the textile itself is a modern factory made synthetic, not a Sherpa tradition.

Sherpa vs Real Shearling

Shearling is a sheepskin or lambskin tanned with the wool still attached. One side is suede or leather, the other is genuine wool, and the two are a single natural material rather than fabrics sewn together. Sherpa is a knit polyester copy of the wool side only.

The differences show up quickly once you wear them. Real shearling breathes and handles moisture, so it stays comfortable across a wide range of temperatures, and a well made shearling coat can last for decades. It's also expensive, heavy and needs specialist cleaning. Sherpa is cheap, machine washable and animal free, but it traps heat and sweat, builds static and wears out far faster.

Telling them apart is straightforward. Check the composition label. Shearling will say lamb, sheep or sheepskin, while sherpa lists polyester or acrylic. Look at the back, too. Shearling has a suede or leather side with no knit structure, while sherpa has a knit backing or is sewn to a separate shell fabric. Price is usually the giveaway. Genuine shearling jackets typically cost several hundred dollars or more, so a 60 dollar "shearling" jacket is faux.

Is Sherpa Warm?

Yes. Sherpa's thick, curly pile traps a lot of still air, and still air is what keeps you warm. As a lining inside a denim, corduroy or canvas jacket, it's very effective, because the outer fabric blocks the wind while the sherpa insulates.

On its own, sherpa is warmer than it looks indoors and less warm than it looks outdoors. The open pile lets a cold wind through, so an unlined sherpa jacket feels great on a still fall afternoon and disappointing on a gusty one. Indoors it can run hot. Polyester doesn't absorb moisture, so once you start to sweat in a sherpa hoodie, that moisture has nowhere to go and you end up feeling damp and overheated at the same time.

That's why WearScore rates polyester's breathability as poor. Warmth isn't the issue with sherpa. Comfort over a full day is.

Sherpa vs Fleece

Sherpa and fleece are close relatives, since both are usually polyester knits with a brushed surface. The difference is in the finish and the job. Fleece is brushed into a fine, even pile, often on both sides, and it's lighter, more compressible and easier to layer. Sherpa is thicker and bulkier, with curly texture on one side and a flat back.

For warmth per ounce and outdoor activity, fleece is the better choice. It packs small, dries faster and works as a midlayer under a shell. For a cozy jacket lining, a lounge hoodie or a throw, sherpa gives more loft and that sheepskin look.

Sherpa also tends to mat faster than good fleece. Its curls tangle under friction and flatten under heat, while a quality anti pill fleece holds its surface longer. If you're choosing between two similarly priced jackets for daily wear, the fleece will usually look better after a couple of seasons.

Why Sherpa Mats and Pills

That signature curl is fragile, and three things wreck it: heat, friction and residue. High dryer heat softens polyester fibers so the curls flatten and fuse together. Friction, both in the washer and during wear, tangles neighboring curls into dense, felt like mats, especially at the underarms, cuffs and wherever a bag strap rubs. Fabric softener coats the fibers and makes them clump.

Pilling follows the same pattern as other polyester fabrics. The fiber is so strong that pills stay anchored instead of falling off, and they keep growing. Our guide on how to stop clothes from pilling covers how to remove them without pulling out the pile.

The label tells the story before you buy. In WearScore's index of seven teddy, sherpa and faux shearling style garments, six list 100% polyester, four of them recycled, and all six grade F. Pure polyester carries a high pilling risk and poor breathability in the app, and there's no natural fiber in the mix to offset it. The seventh listed a single fiber, 100% viscose, with nothing about what its sherpa collar is made of. That's common. Labels often give separate compositions for the shell, the lining and the trim, and some product pages show only one, so read every line.

How to Spot Better Sherpa in the Store

Sherpa quality varies more than the price tags suggest, and a few quick checks go a long way. Start with density. Part the pile with your fingers. Better sherpa has tightly packed curls and you can barely see the knit backing underneath, while cheap sherpa shows visible gaps and feels thin when you pinch it.

Next, rub a small area briskly with your palm for a few seconds. If the curls already start to fuzz up or loose fibers come away on your hand, the fabric will pill and mat quickly at home. Think about where the sherpa sits in the garment, too. A sherpa lining inside a sturdy cotton denim or corduroy shell takes far less abuse than an all sherpa jacket, where the pile meets bag straps, chair backs and car seats every day.

Finally, read the full composition and the care label together. A jacket with a cotton shell and a polyester sherpa lining will breathe and wear differently from one that's polyester inside and out, and the care label tells you how much heat the whole piece can safely take.

How to Wash Sherpa and Keep It Fluffy

Most sherpa care comes down to less heat and less friction:

• Wash only when needed. Spot clean small marks and air the garment out between wears.
• Turn it inside out, close the zippers and wash in cold water on a gentle cycle.
• Use a mild liquid detergent and skip fabric softener entirely.
• Don't overload the machine, and keep sherpa away from towels and denim.
• Air dry, or tumble on the no heat or air fluff setting with a couple of dryer balls.

If the pile has already flattened, it can often be revived. Once the garment is completely dry, work over small sections with a soft bristle brush or a pet slicker brush, using light strokes in one direction. Go gently, since hard brushing pulls fibers out and thins the pile. A short cool tumble with dryer balls afterward helps lift the curls.

Because sherpa is a polyester pile fabric, it also sheds microfibers in the wash, and recycled polyester sherpa sheds just like the virgin version. We explain why in our piece on recycled polyester and microplastics. Washing less often, in cold water and full loads, cuts down on both shedding and matting.

The Honest Answer on Sherpa

Sherpa does one job very well. It's a cheap, warm, cozy lining that makes a denim jacket or hoodie wearable well into winter, and a sherpa throw is hard to beat on the couch. For those uses, polyester sherpa is a perfectly reasonable buy.

It's a weaker choice when you expect it to last, breathe or stand in for a real winter coat. Pure polyester sherpa runs hot and sweaty indoors, mats under heat and friction, and rarely looks as good in its third winter as it did in its first. If you want the look for decades, real shearling is the long term option. If you want performance warmth, a good fleece under a windproof shell does more with less bulk.

Before you buy, scan the label with WearScore. You'll see what the sherpa and the shell are actually made of, the pilling risk, whether it's dryer safe and a realistic longevity estimate, so you can decide whether that teddy jacket is a one winter piece or something you'll keep.