Taking on a classic, which the Chesterfield most certainly is, is often a job principally of taking away parts which are obsolete, like the epaulettes, say, on a trench. The Chesterfield, though, glorious as it is, can seem sometimes a bit fuddy-duddy, so top priority was to shake off the stuffiness.
The square shoulders of the stereotypical Chesterfield have been replaced with a type of raglan sleeve — a so-called "semi-raglan" — which makes for a round shoulder rather than an angular one. Streamlining extends too to the elimination of almost all visible buttons, on both the body and the belt.
For dramatic flourish, the pockets have been dialled up to eleven — postbox patches with preposterously large flaps — and pushed closer to the front of the body, while the point where collar meets lapel, in a nod to a school now so old it is perhaps again new, is very, very low, thumbing its nose to the usual proportions.