ITY

What Is ITY Fabric? Properties and Characteristics

ITY fabric earns its popularity in fashion because it combines four-way stretch with excellent drape, two properties that rarely coexist in woven fabrics.

The interlock knit construction is what makes this possible. Warp and weft yarns interlock in both directions, producing a stable, double-faced surface with consistent stretch recovery across the grain. Here is what that means in practical terms for your project,

• Stretch: Four-way stretch, typically 50 - 75% in both the lengthwise and crosswise directions, with reliable recovery back to the original shape. This is the defining performance attribute of ITY knit.
• Drape: Fluid hand that hangs close to the body. ITY does not stiffen or hold a rigid silhouette the way a woven twill fabric or taffeta fabric would.
• Wrinkle resistance: The polyester base resists creasing under pressure, which is why ITY is a practical choice for travel clothing and event wear that needs to look polished after being packed.
• Moisture management: The polyester fiber base wicks surface moisture away from the skin, though ITY does not breathe as freely as natural fibers like cotton or linen. Set accurate expectations for warm-weather or high-exertion end uses.
• Weight range: Typically spanning from 150 GSM (lightweight jersey) up to 420 GSM for heavy weights. The ITY JERSEY 400 G/Y is a useful reference point for the dense, upper end of the weight spectrum, offering an incredibly substantial hand.
• Surface finish: Smooth and matte on standard ITY knit, with foil, glitter, and brushed variants available in the collections ITY range above.
• Double-faced construction: No distinct right or wrong side, which simplifies cutting layout and eliminates the need for a separate lining in most finished garments.

Pilling resistance is moderate. The tightly interlocked construction holds up better than looser single-knit jersey, but high-friction areas on finished garments will show wear over time.

ITY Fabric vs. Other Stretch Fabrics

Shoppers often confuse ITY with DTY, ponte, and standard jersey. Here is how they differ in weight, structure, and best use.

• ITY vs. DTY: DTY (Draw Textured Yarn) is a similar polyester-spandex knit but typically carries a slightly more textured, matte surface. ITY tends to be smoother and drapier. Both are machine washable and share a comparable GSM range. The BRUSHED ITY JERSEY KNIT sits at the crossover point between the two constructions, with a softened surface hand closer to DTY.
• ITY vs. Ponte: Ponte is heavier and more structured, typically 250 - 350 GSM, and holds its shape better for tailored pieces. ITY is lighter and drapier, better suited to flowing silhouettes. Heavier ITY weights (300+ GSM) can substitute for ponte in structured tops and skirts, but standard ITY knit will not replicate ponte’s firm hand.
• ITY vs. Jersey: Standard jersey is usually single-knit and lighter in weight. ITY’s interlock construction gives it more body, better stretch recovery, and a more polished appearance on both sides. If you are deciding between the two for a wrap dress or maxi skirt, ITY is the stronger pick for drape and finish.

Choose ITY when you need a fabric that drapes fluidly and moves with the body. Choose ponte when structure and shape retention are the priority.

For reference, our collections also include georgette fabric and suede fabric options for projects where a different hand or surface texture is the right call.

What Is ITY Fabric Used For?

Because ITY fabric stretches, drapes, and resists wrinkles, it works across a wider range of garment types than most knits.

How to Sew ITY Fabric

ITY fabric’s stretch and slippery surface require a few technique adjustments to sew cleanly. The right needle and stitch selection make the biggest difference.

1. Needle: Use a ballpoint or stretch needle, size 75/11 for lightweight ITY or 90/14 for heavier weights. A ballpoint tip passes between the interlock knit loops rather than piercing them, preventing skipped stitches and snags.
2. Stitch: Use a narrow zigzag (1.5 - 2mm width) or a dedicated stretch stitch. Avoid straight stitches on seams that will be under tension; they will pop when the fabric stretches.
3. Serger: A serger with a 4-thread overlock stitch produces the cleanest, most durable seams and handles the fabric’s stretch without restricting it.
4. Cutting: Use a sharp rotary cutter or fabric scissors. Avoid pulling the fabric while cutting; ITY will distort along the grain if stretched during layout.
5. Pressing: Use a low-to-medium iron with a pressing cloth. High heat damages polyester fibers and can cause permanent distortion. Steam is preferred over direct contact.
6. Seam allowance: Allow at least 5/8” seam allowance. ITY can shift slightly during sewing, and a wider allowance gives you room to correct.

Pin sparingly or use fabric clips. Excessive pinning can leave visible holes in the smooth surface, particularly on lighter-weight ITY knit.

How to Care for ITY Fabric

ITY fabric is low-maintenance. Most weights are machine washable and dry quickly, making finished garments practical to care for.

• Machine wash cold on a gentle cycle. Hot water causes shrinkage and can damage the spandex (elastane) content over time.
• Tumble dry on low heat or hang dry. High heat causes pilling and can distort the interlock knit structure.
• Iron on low heat with a pressing cloth if needed. Steam is preferred over direct iron contact on the fabric surface.
• Most ITY fabrics are colorfast, but wash dark colors separately on the first wash to prevent color transfer.
• Dry cleaning is not required and is generally unnecessary for standard ITY knit.

Always check the product page for fiber-specific care guidance, as surface treatments on foil jersey knit ITY or glitter jersey knit variants may require additional precautions.

Frequently Asked Questions About ITY Fabric

What does ITY stand for?

ITY stands for Interlock Twist Yarn, sometimes also called Interlock Textured Yarn. The name refers to the yarn construction method used to produce this type of knit fabric.

Is ITY fabric stretchy?

Yes. ITY fabric has four-way stretch, typically 50 - 75% in both the lengthwise and crosswise directions, with reliable recovery back to its original shape. This stretch recovery is what makes it a practical choice for fitted and semi-fitted garments.

Does ITY fabric wrinkle?

ITY fabric is highly wrinkle-resistant due to its polyester content. That property makes it a practical choice for travel clothing and event wear that needs to look polished after being packed or worn for extended periods.

Does ITY fabric need to be lined?

Not usually. The double-faced interlock construction means both sides look finished, so most ITY garments do not require a separate lining. This is one of the practical advantages ITY has over single-faced knits and many woven fabrics.

Is ITY fabric the same as jersey?

No. Both are knit fabrics, but ITY uses an interlock construction that makes it heavier, more dimensionally stable, and finished on both sides compared to standard single-knit jersey. The difference matters when choosing between the two for your project.

Can I buy ITY fabric by the yard?

Yes. Zelouf Fabrics offers ITY fabric by the yard across a range of weights, colors, and prints, with wholesale pricing available for bulk orders. The collection spans solid ITY jersey knit, foil jersey knit ITY, crepe jersey knit, glitter jersey knit, brushed ITY jersey knit, and print ITY options. Free swatches are available; order a swatch before committing to yardage for color-critical projects.