Sherpa vs Fleece: What's Actually Different

Sherpa and fleece get used as synonyms in product copy constantly. They are related — both are usually polyester pile fabrics — but they behave differently enough that picking the wrong one means a jacket that is too warm, too bulky, or not warm enough.

The actual difference

Both are pile fabrics: a knitted base with fibres standing up from the surface, trapping air. Air is what insulates, not the fibre itself.

Fleece has a shorter, denser, more uniform pile, usually brushed on both faces. It is smooth, compresses well, and reads as a sweatshirt-adjacent fabric.

Sherpa has a longer, curled, deliberately irregular pile made to imitate shearling wool. It is lofted and bulky, and it is normally used on one face only, backed by a smooth fabric or lining.

That loft is why sherpa looks thicker at the same weight. More air, less density.

Weight, in practice

Our own two pieces make the comparison concrete. The fleece body sits at 280–320 GSM. The sherpa is 380–420 GSM with a medium pile height.

The sherpa is roughly a third heavier on paper, and considerably more than that in perceived bulk, because the pile stands away from the body. If you want warmth without volume, fleece. If you want the volume as part of the silhouette, sherpa.

Pile height matters as much as GSM here. A high-pile sherpa at 380 GSM feels far larger than a medium-pile one at the same weight.

How each one ages

This is the part most guides skip, and it is the one you will actually notice.

Fleece pills. Short fibres work loose under friction and ball up, usually first at the cuffs and where a bag strap sits. It is normal, it is not a defect, and a fabric shaver takes it off.

Sherpa mats. The curled pile compresses and clumps, especially under heat. Once matted it does not fully recover. This is why sherpa should be hung to dry rather than tumbled — a hot dryer is the fastest way to flatten it permanently.

Wash both inside out on cold and gentle. For sherpa specifically, skip the dryer.

Which to choose

• Layering under a coat — fleece. Sherpa's loft fights an outer layer.
• Outermost layer in cold, dry weather — sherpa. The trapped air does real work.
• You want a cleaner silhouette — fleece, or sherpa used only as collar and cuff trim.
• You want texture as the point — sherpa.

Neither is waterproof. Both are polyester pile, both wet out, and both take a long time to dry.