Marled

Marled yarn is made by twisting two differently colored, or different-fiber, yarns together into a single plied strand before knitting, so the resulting fabric shows both colors clearly rather than blending into a uniform tint. That's the mechanical difference from heather, which usually comes from blending colored and white fiber together at the carding stage before spinning a single yarn — marl keeps two distinct yarns visible, so the effect reads chunkier and more textured up close.

A marled charcoal-and-white tee shows visible flecks and slubs you can pick out individually, where a heathered charcoal tee reads as a more uniform smoky gray from a few feet away. This matters for print jobs: a bold marled ground color can compete visually with a light-ink design in a way a subtler heather won't, so we typically push clients toward darker, higher-contrast ink or a larger print area on marled blanks to keep the design legible.

Choose marled fabric when the brief calls for a rugged, athletic-heritage look — Next Level's marled tri-blends are the classic example — and reserve standard heather for a softer, more subdued base color.

Buyers often use "heather" and "marl" interchangeably on a spec sheet, but they're different constructions with different visual textures, and mixing them up on a reorder can mean the new shirts don't match the old ones on the rack even though both got called "gray heather."