Lab coats: shoulder, sleeve and length

A lab coat reads as professional or as borrowed, and the difference is usually three measurements.

Shoulder comes first. The seam should sit at the edge of the shoulder bone, not past it. A coat with a dropped shoulder looks sloppy regardless of how well the rest fits, because the sleeve then hangs from the wrong point and the armhole folds.

Sleeve length is second. The cuff should end at the wrist bone, allowing a shirt cuff or a watch to sit below it. Too short and the coat looks like it shrank. Too long and it interferes with hands that are doing fine work.

Length is third, and it is the one most people get wrong because it is a matter of proportion rather than size. A coat that ends mid thigh reads as a jacket. One that ends just above the knee reads as a lab coat. The classic length is roughly at the knee, with enough room to walk and to sit without the hem catching.

Fabric weight matters here too. A light coat hangs straight and looks crisp but shows every crease. A heavier coat drapes better and holds its shape through a long shift, at the cost of warmth.

Two details worth checking. The pocket depth: a coat pocket should take a notebook and a phone without sagging the front panel. And the closure: a button front that gaps between buttons is a pattern problem, not a fitting problem, and it cannot be fixed by sizing up.

Doctors wear a lab coat over scrubs for hours at a time and take it off and on constantly. It has to look right standing still and survive being folded over a chair.

Amrit Rana, a physician in Kathmandu, wanted a coat long enough to sit in without riding up and short enough to walk quickly between wards. We cut it two centimetres above the knee and shortened the sleeve by one. He has reordered the same specification twice.

If you are ordering for a department, sample one coat in two sizes and try it over the actual scrubs. The fit changes when the layer underneath changes.