Knit Fabric Guide: Structure, Gauge and How to Choose

Knits are the backbone of modern casual and performance wear. Unlike woven fabric, a knit is made from loops of yarn — which gives it stretch, drape and comfort, but also introduces its own set of decisions: gauge, structure and how the fabric behaves. Here is how buying teams can get it right.

How Knit Fabric Is Structured

A knit is built from interlocking loops rather than a woven grid. That single difference explains everything: knits stretch, recover, drape and feel different from wovens. The two most important families are weft knits (single jersey, rib, interlock — the everyday fabrics) and warp knits (tricot, raschel — more stable, used in technical and intimate apparel).

Knit Gauge: 7g, 9g, 12g and What It Means

Gauge is the number of needles per inch — and it decides the look, weight and drape of a knit. Lower gauge = chunky, closer to a hand-knit look; higher gauge = finer, smoother and lighter.

• 7 gauge — chunky, blanket-weight sweaters and cardigans.
• 9 gauge — a versatile middle ground for heavy knitwear.
• 12 gauge and up — fine, smooth knits for lighter garments.

Flat Knit vs Circular Knit

• Flat knit — knitted flat, then seamed. Produces clean, shaped panels, great for structured pieces and cables.
• Circular knit — knitted in a tube, seamless and efficient. Ideal for jerseys, athleisure and high-volume basics.

Cable, Aran and Jacquard

Cable knit uses twisted, raised stitches for a classic, three-dimensional look. Aran is a style of cable patterns with a rich, textured surface. Jacquard knits are produced with a special machine that handles multiple colours at once — the source of full-colour patterns and motifs.

Performance Knits

Performance knits are engineered for specific jobs: 4-way stretch for movement, moisture-wicking and quick-dry for sportswear, and wicking blends for active and athleisure lines. They often combine synthetic fibres (polyester, nylon, elastane) with cotton or recycled yarns.

How to Choose the Right Knit

1. Decide the garment — a heavy cardigan needs a low-gauge cable knit; a base layer needs a fine performance knit.
2. Pick the gauge for the look and weight you want.
3. Choose flat or circular based on whether you want shaped panels or a seamless, efficient knit.
4. Check stretch and recovery — especially for garments that must hold their shape.
5. Request samples and test for shrinkage and curling before committing.

Frequently Asked Questions

What is the difference between knit and woven fabric?

A knit is built from interlocking loops, giving it stretch and drape; a woven fabric is a grid of warp and weft, which is more stable and less stretchy.

What does gauge mean in knitwear?

Gauge is the number of needles per inch. Lower gauge (7g) = chunky and bold; higher gauge (12g+) = fine and smooth.

Is flat or circular knit better?

Flat knit gives clean, shaped panels for structured pieces and cables. Circular knit is seamless and efficient — great for basics and athleisure.

What is a performance knit?

A performance knit is engineered for stretch, wicking or moisture control — common in sportswear and athleisure. It often blends synthetics with cotton or recycled yarn.

Does knit fabric shrink?

Knits can shrink more than wovens. Confirm shrinkage testing and finishing with the mill, and check a real sample first.

Can I order a small amount of knit fabric?

Yes — Fursone supplies ready stock from 1 roll (approx. 20–50 m) and custom development from 300 m per colour. Specialty knits (cable, jacquard) follow the same custom minimum.