
Knit Fabric Manufacturer Since 2009 · China
Knit Fabric Manufacturer Since 2009 · China
MERCERIZED KNIT · FABRIC SOURCING
Runtang Textile manufactures mercerized cotton knit fabrics for premium T-shirts, polo shirts, T-shirt dresses and fitted tops. Choose 100% mercerized cotton, cotton/spandex or cotton blends with lyocell, linen or silk, in single jersey, interlock or pique. Stock orders start at 1 roll (~23 kg) per colour; custom colours start at 200 kg per colour.

Mercerized Knit Fabric for apparel brands, garment manufacturers and fabric sourcing teams.
Explore our online mercerized knit range, backed by a library of 53 options.
| Item | Composition | Weight | Width | Details |
|---|---|---|---|---|
| KF3281 | 50% cotton / 50% polyester | 180 GSM | 72/74 | View specifications |
| RHS45003 | 100% cotton | 160 GSM | 53.1″ (135 cm) | View specifications |
| RHS45002 | 100% cotton | 165 GSM | 53.1″ (135 cm) | View specifications |
| RHS45001 | 95% cotton 5% spandex mercerized cotton | 175 GSM | 68.9″ (175 cm) | View specifications |
| RHS45005 | 100% cotton | 190 GSM | 61″ (155 cm) | View specifications |
| RHS45004 | 100% cotton | 195 GSM | 55.1″ (140 cm) | View specifications |
| RHS45006 | 54% cotton / 46% sorona | 255 GSM | 63″ (160 cm) | View specifications |
Our fabric library includes 53 mercerized knit options. Contact us for more compositions, weights and colours for your collection.
Mercerized knit fabric is made from cotton that has been treated with caustic soda under tension, as yarn or as fabric. The treatment swells the cotton fibres so they become rounder and smoother, which gives the knit a subtle lustre, a cooler and crisper hand, and deeper, clearer colour after dyeing. Nearly all of our 53 mercerized qualities are cotton-based, and most weigh 160–210 GSM. Many are interlock or single jersey, and about half are also listed in our premium range. Mercerizing adds a process step, so it costs more than regular cotton, and its smooth, slightly crisp hand is not the right choice if you want a washed, vintage-soft tee.
Pure mercerized cotton covers half of our range; spandex and fibre blends adjust stretch, drape and sheen.
| Fabric type | Fabric examples | Apparel applications |
|---|---|---|
| 100% mercerized cotton | 140–230 GSM, such as RHS45005 at 190 GSM | Premium T-shirts, T-shirt dresses and polo shirts |
| Mercerized cotton/spandex | 160–285 GSM, such as RHS45036 (90% cotton / 10% spandex) at 220 GSM | Fitted tees and stretch polo shirts |
| Cotton with lyocell, linen, modal or silk | 145–210 GSM, such as P3398 (63% cotton / 30% lyocell / 7% linen) at 210 GSM | Summer tees, polos and loungewear |
Choose 155–205 GSM mercerized cotton for premium T-shirts, 160–190 GSM interlock when the tee should look smooth on both sides, 185–215 GSM for polo shirts, and 145–170 GSM for light loungewear and sleep tops.
Buyers looking for a smarter T-shirt usually compare mercerized cotton with regular cotton jersey and modal.
| Feature | Mercerized Knit | Single Jersey | Modal Knit |
|---|---|---|---|
| Fibre | Cotton treated with caustic soda | Regular cotton or blends | Regenerated cellulose |
| Surface | Subtle lustre | Matte | Soft sheen |
| Hand feel | Smooth, cool and crisp | Soft and familiar | Very soft and fluid |
| Typical weights in our library | 160–210 GSM | 165–230 GSM | 180–300 GSM |
| Typical garments | Premium tees, polos and dresses | Everyday tees, tops and loungewear | Underwear, loungewear and drapey tees |
Xiwen Zhang, our co-founder and CEO, recommends these mercerized weights and blends for the refined cotton pieces where lustre and a crisp hand matter most, drawing on our knit fabric experience since 2009.

NINE IN TEN MERCERIZED QUALITIES
Choose 155–205 GSM mercerized cotton for premium T-shirts. Almost every mercerized quality in our library is tagged for tees, and the lustre makes a plain crew neck look smarter in deep or bright colours.

A SHARPER POLO
185–215 GSM mercerized cotton works well for smart polo shirts, in jersey for a clean face or pique for texture. The crisp hand keeps collars and plackets neat, which suits business-casual and golf collections.

CLEAN COLOUR, EASY SHAPE
For T-shirt and shift dresses, start with 155–210 GSM mercerized cotton. It gives a simple dress a polished surface and rich colour, and interlock versions stay opaque in light shades.

LUSTRE WITH STRETCH
Choose 165–205 GSM mercerized cotton with spandex for camisoles, tanks and fitted tops. The spandex keeps the fit close, and the mercerized surface gives a fitted cotton top a dressier finish.

HEAVIER COTTON WITH SHINE
For boxy streetwear tees, choose the heavier end of our mercerized range, around 170–210 GSM. Mercerizing deepens dark colours such as black and navy, which helps graphic tees look sharper.

COOL COTTON FOR WARM NIGHTS
For light sleep tops and summer lounge sets, start with 145–170 GSM mercerized cotton, or a lyocell/cotton/silk blend for a silkier touch. The cool, smooth hand suits warm-weather sleepwear.
No. Mercerized cotton is cotton that has been treated with caustic soda under tension. The fibre is still cotton, so it is labelled as cotton; mercerizing changes its lustre, hand and dye uptake.
Choose single jersey for a lighter, more fluid tee, mostly 145–170 GSM in our library. Choose interlock for a smoother, more opaque tee that looks the same on both sides, mostly 160–190 GSM.
Most mercerized T-shirt qualities in our library weigh 155–205 GSM. Go lighter for summer and layering tees, and toward 200 GSM for a substantial tee that hangs cleanly.
Mercerizing runs on our group's own two mercerizing lines, which treat the cotton under tension for lustre and dye uptake. Mercerized tees are often premium dark shades, so wet rubbing and washing fastness are the key lines, and shrinkage is checked in length and width with the drying method stated.
Stock fabric orders start at 1 roll (~23 kg) per colour. Custom-colour orders start at 200 kg per colour.
Read practical guides to fibre blends, garment selection and knit construction.