The short full-zip jacket is shown in Black and Grey. The gallery shows the black version open over a longer plaid shirt: the shirt hem remains visible below the jacket. That is one outfit arrangement, not a bundled shirt. Before choosing M, L, XL or 2XL, decide whether you want a similar exposed layer or a neater line with the top underneath ending above the jacket hem.

Scenario one: leave a shirt hem visible

For the layered look, compare the jacket’s back-center length with the length of a shirt you own. The source lists M 62 cm, L 64 cm, XL 66 cm and 2XL 68 cm. A longer shirt can extend below the jacket, as in the photo, but the amount showing depends on your shirt’s actual length and where both pieces sit on you. The chart does not measure the front hem, so use the back-center figure only for a like-for-like comparison.

Scenario two: keep the layers inside the zip

If you want the shirt mostly hidden, check room at the closed jacket as well as its hem. The listed chest/shoulder/sleeve numbers in centimeters are M 120/50/61, L 124/51/62, XL 128/52/63 and 2XL 132/53/64. Chest rises 4 cm with each size, while shoulder and sleeve each rise 1 cm. Compare those points with a zipped jacket that fits over the layer you plan to wear. A size increase also lengthens the back by 2 cm, so selecting more body room can change the cropped-looking proportion.

Use the model note as context, not a formula

The source lists a 172 cm, 56 kg model wearing M and describes the chart as manually measured with a 1–3 cm allowance. The model’s height and weight do not establish your chest, shoulder or sleeve fit. The listing gives 97% polyester and 3% spandex, but no measured stretch or warmth rating; do not infer how much bulk fits inside from fiber content alone. The broader shirt-and-jacket layering guide can help plan the pieces you already own.