Interlock Knit

Interlock knit is built on two sets of needles that lock a pair of 1x1 rib fabrics together, back-to-back, so both faces of the cloth look and feel the same — no technical front or back the way jersey has. That double-layer construction makes the fabric denser and more stable than single knit jersey, typically landing in the 5.5-7.5 oz range for polos and dress-weight tees, with a flat, low-texture surface and edges that won't curl on the cutting table.

Buyers reach for interlock when they want a step up from a standard piqué polo — the surface reads smoother and slightly more formal, which is why golf brands and performance-polo lines lean on it. On press, that flatness pays off: halftones and fine line art hold their edges instead of breaking up in a knit ridge the way they can on rib or piqué goods, and embroidery digitizes cleanly because the stitches sit on an even plane.

Spec interlock over piqué when the design has small text, gradients, or process-color detail, or when the order calls for a slimmer, less textured drape than a classic polo. It's heavier than typical jersey, so plan flash and cure the way you would for a mid-weight garment, not a lightweight tee.

Polo spec sheets list piqué and this fabric side by side often enough that buyers assume they're the same cloth — they aren't. Piqué carries visible waffle-like ridges across its face; interlock knit is flat and smooth on both sides, and swapping one for the other changes the hand of the shirt and how crisp a printed logo reads.