4-Bar Cashmere-Blend Turtleneck — Navy, Size XS [IT 38]

Thom Browne's whole project is the uniform perfected, and the 4-Bar is its flag — four stripes at the left sleeve that have become one of the most quietly recognised signatures in fashion. This turtleneck renders it at its most tonal: navy on navy, legible to those who know and invisible to everyone else.

85% wool and 15% cashmere, overwashed for softness while the structure holds. The variegated half-cardigan stitch gives the surface a waffle-like depth you read across a room and feel in the hand. A high roll neck draws a clean, elongated line; the shoulder is dropped and relaxed over a neat, tailored body that finishes at the hip; ribbed cuffs and hem keep the whole thing polished. Made in Italy.

It is the turtleneck that anchors a winter wardrobe — under tailoring, over trousers, with everything grey flannel ever made. Thom Browne's basics are the most disciplined objects in the line, and this is the uniform's coldest-weather piece in its most whispered colourway: a signature you have to be looking for to see. Size XS (IT 38).