What brushing actually does
A brushed fabric, also sold as peached or buttery, has been passed through a finishing process that gently raises fibers on the face. The result is a soft, slightly matte surface with a hand some customers compare to suede or skin. An unbrushed fabric keeps the smooth, closed face of the original knit, which feels cooler and more technical and often shows a slight sheen.
The underlying fabric can be the same. A nylon and spandex interlock can be sold in both versions, and so can many polyester and spandex qualities. That is why buyers should compare the two finishes as two separate fabric specifications, not as a style detail added at the end.
How the two finishes compare
| Factor | Brushed (peached) | Unbrushed (smooth) |
|---|---|---|
| Hand | Soft, matte, cushioned | Smooth, cool, technical |
| Typical composition | About 76-78% nylon, 22-24% spandex | 75-80% nylon, 20-25% spandex |
| Example sheets | 76/24 at 230 GSM; 78/22 at 250 GSM | Confirmed per fabric sheet |
| Weight range | 220-280 GSM; winter brushed 260-320 GSM | 230-280 GSM for performance leggings |
| Thermal feel | Warmer | Cooler |
| Pilling risk | Higher if base is not suited to brushing | Generally lower |
| Best fit | Slow flow, everyday wear, cooler studios | Hot classes, training, sweaty sessions |
All weights and compositions above are reference ranges. The exact numbers for your program are confirmed on the fabric sheet the mill signs off.
The weight question
Brushing can add 5-15 GSM to a fabric. That sounds minor, but it changes how fabrics compare on paper. A brushed fabric listed at 250 GSM finished may have started at a lower base weight. If you compare it against an unbrushed fabric at 250 GSM, you are not comparing like with like for opacity.
The extra surface fibers do help a little with the look of opacity, because they scatter light. They do not replace adequate weight. The GSM guide explains how weight relates to opacity in light colors.
Pilling: the main risk with brushed fabric
Raised fibers on the face are exactly what pills are made of. When a brushed legging rubs against itself at the inner thigh, or against a mat, loose fibers can tangle into small balls. This is the most common complaint about soft-touch leggings, and it usually appears after a few washes rather than on the first wear.
Not every base fabric is suited to brushing. Yarn type, twist and knit tightness all affect whether the raised fibers stay anchored. Some mills apply an anti-pilling finish after brushing. Whatever the approach, test pilling on the finished, brushed fabric rather than the base. Common methods are ASTM D4970 or ISO 12945-2, which use a Martindale-type tester, and ASTM D3512, a random tumble method. Agree on the method and the acceptance grade before bulk. Our note on pilling resistance covers how to set that grade.
Warmth and sweat
Brushed fabrics feel warmer because the raised surface traps a thin layer of air near the skin. That is welcome in a cool studio, a winter outdoor class or a long restorative session. In heated classes it can feel heavy, and a brushed face can feel damp for longer once soaked.
A smooth face tends to feel cooler and to release sweat more readily. For a line aimed at heated classes, an unbrushed fabric is usually the first choice, with brushed versions kept for cooler-weather drops. See the hot yoga wear guide for the full set of decisions for heated classes.
Color and appearance
Brushing changes how a color reads. The matte surface usually looks slightly softer and lighter than the same shade on a smooth face, and it shows less sheen under studio lights. If a set combines a brushed legging with an unbrushed bra, the two can look like different shades even when dyed in the same bath. Approve lab dips on the finished fabric, and keep the pieces of a matching set on the same finish where possible.
Colorfastness should also be tested after finishing. Ask for laundering results to AATCC 61, perspiration to AATCC 15 or ISO 105-E04, where a grade of 3-4 is a common acceptance, and crocking to AATCC 8.
Which finish for which product
- Everyday and slow-flow leggings: brushed, in the 230-260 GSM finished area, with pilling tested after brushing.
- Hot yoga and training leggings: unbrushed, with opacity approved when the fabric is stretched and, where relevant, damp.
- Winter capsule: heavier brushed qualities in the 260-320 GSM range, with enough spandex to stay flexible.
- Bras in a set: match the finish of the leggings for color, then adjust construction for support.
- Printed styles: discuss with the mill; printing and brushing order affects how the print looks.
Writing the finish into the fabric sheet
- Name the finish: brushed one side, brushed face, or smooth, and any anti-pilling treatment.
- Record base and finished GSM with tolerance and test method (ISO 3801 or ASTM D3776).
- Name the pilling method and acceptance grade, tested on the finished fabric.
- Record colorfastness methods tested after finishing.
- Keep a signed swatch of the finished fabric as the reference for bulk and reorders.
With this in place, a reorder that comes back rougher or flatter can be checked against the swatch and the sheet, rather than argued from memory.
Checking brushing consistency in bulk
Brushing is a mechanical process, and its intensity can vary between runs. Two rolls of the same quality can come out with a slightly different hand, a different weight gain or a different shade if the finishing settings drift. Inspection for brushed programs should therefore include a hand-feel comparison against the signed swatch, a finished weight check on each lot and a visual check of shade under consistent light. If a lot feels noticeably flatter or fuzzier than the reference, raise it before cutting, while the fabric can still be re-finished or replaced. The quality control page describes how these checks fit into the inspection plan.
Next step
If you are unsure which finish suits your customer, the desk can request finished swatches of both on the same base fabric, so you can compare hand, color and weight side by side. Start from the fabric library or send your styles through the quote form.