An open-front cardigan knitted in a chunky vertical rib, cut long enough to reach mid-thigh and left without buttons or ties so there is nothing to interrupt the line down the front. The sleeves are the detail worth paying for: full and rounded through the arm, then drawn in sharply at a deep ribbed cuff so the volume sits where it flatters. There is no collar, just a clean V-shaped opening that lets whatever is underneath show.

Because it hangs open, the length does the work of a coat while the knit keeps the weight of a sweater, warm over a tee, easy over a dress, and thick enough that it does not need much underneath it to be worth wearing. The ribbed hem stops the front panels from curling, and the dropped shoulder gives room to layer a shirt without pulling across the back, and the whole thing goes on in one movement.

• Fabric: chunky rib knit
• Front: open, with no fastening
• Sleeves: balloon shaped into deep ribbed cuffs
• Trims: ribbed cuffs and hem
• Length: longline, falling to mid-thigh