Circular knitting uses a circular needle arrangement to create fabric, panels or garments. Woolmark describes both single-knit and double-knit configurations and machines of different diameters. Small diameters suit items such as socks, while larger tubes can supply fabric for cut-and-sew clothing.

Illustrative image
Illustrative image.

A tubular form is therefore a useful construction clue, but it does not establish a specific fibre or guarantee a completely seam-free finished garment. The machine configuration and later assembly still matter. Understanding that production route helps distinguish circular-knit cloth from fabric created on a flat needle bed.