The stand-collar sweater offers M, L, XL and 2XL in Olive Green or Light Blue. Its chart gives four measurement lines. If you want to wear it under a jacket, checking only the chest can leave an unexpected sleeve or hem position. Compare the chart with a knit you already like, using the same measurement points if the seller can confirm them.

Read each size step on its own axis

From M through 2XL, listed chest values are 106, 110, 114 and 118 cm: each step adds 4 cm. Shoulder values are 56, 58, 60 and 62 cm: each adds 2 cm. Sleeve lengths are 52.5, 53.5, 54.5 and 55.5 cm: each adds 1 cm. Back-center lengths are 58.5, 60.5, 62.5 and 64.5 cm: each adds 2 cm. Moving from M to 2XL therefore changes chest by 12 cm but sleeve by only 3 cm. These are changes in the published chart, not promises about the sweater after wear or washing.

Decide whether the jacket matters

For a sweater worn by itself, lay a reference knit flat and compare its chest and shoulder with the candidate row. For a sweater under a jacket, also compare the combined shoulder bulk and where a 58.5–64.5 cm back length would meet the jacket hem. Check sleeve reach against your reference, remembering that the source does not define where its shoulder and sleeve measurements begin. A collar-height figure is absent, so verify the collar in a side photo if a close jacket neck or scarf is part of the outfit.

Use composition as a fact, not a performance rating

The listing states 42% acrylic, 30% polyester and 28% nylon. It gives no tested stretch, warmth or pilling result. The chart mentions manual flat measurements with a possible 1–3 cm difference, which makes a borderline size choice worth checking with the seller. Ask for a current garment measurement if your reference sits close to one chart value; do not convert the chart into a body-size guarantee.