Double cuffs are designed to be worn with cufflinks. The cuff is folded back over itself and fastened with a link.
Herringbone is a diagonal weave with a pattern resembling a reversing zigzag or a fish skeleton (which is where the name “herringbone” comes from). This weave is more water resistant than plain weaves, so herringbone fabrics dry quickly and are easy to iron. Herringbone has a smooth feel, textured warmth, a soft drape and occasionally a slight sheen.