What is double knit sweater?

A double knit sweater is a garment made from double knit fabric, a knitting construction where two layers of fabric are knitted together simultaneously on the machine, forming a single, bonded textile.

How double knit works

Double knit fabric is produced on double-bed knitting machines, with stitches interlocking front and back. Unlike single knit (jersey), it does not have a distinct “right” or “wrong” side.

Key characteristics

• Thicker and more stable than single knit

• Holds shape well with minimal curling at edges

• More structured and less stretchy than jersey

• Smooth on both sides, often identical front and back

• Better durability and resistance to sagging

Common double knit types

• Interlock knit (the most common double knit)

• Rib-based double knits (heavier, elastic variants)

Typical uses

• Structured sweaters and pullovers

• Cardigans and sweater jackets

• Knit blazers, dresses, and premium knit tops

Double knit vs single knit

• Single knit (jersey): lighter, stretchier, more casual, edges curl

• Double knit: heavier, cleaner silhouette, more tailored appearance

In practical terms

If a sweater feels substantial, smooth on both sides, and tailored rather than slouchy, it is likely a double knit sweater. This construction is often chosen for garments that need polish, durability, and shape retention rather than a relaxed drape.