The half-turtleneck sweater is described as a bottoming layer, but its listed dimensions should decide whether it works under a particular jacket. From S to XL, chest changes from 115 to 127 cm, shoulder from 54 to 60 cm, sleeve from 51 to 54 cm, and length from 64 to 70 cm. Those dimensions do not all grow at the same rate.

Compare the layer you own

Lay a top that fits the way you want this sweater to fit beside a jacket you actually wear. Record the top’s chest, shoulder, sleeve and length using the same measuring points as the seller’s chart. S to M adds 4 cm at the chest and 2 cm at the shoulder, but only 1 cm at the sleeve. Across all four sizes, chest gains 12 cm while the sleeve gains 3 cm. Sizing up for room under an outer layer may therefore change the body fit more than the cuff position. Check both measurements before choosing a letter size.

The product calls itself a half turtleneck, but gives no collar height or neck-opening measurement. If you need the collar to sit inside a particular jacket neckline, request those dimensions rather than inferring them from the name. The chart says flat-laid manual measurements may differ by 1–3 cm; it does not explain whether the chest number is a circumference or a doubled flat width. Confirm that convention before comparing it with your own measurements.

Black, White, Grey, Apricot and Red are the listed colours. Colour does not resolve the fit question. The source also does not name a fibre composition, fabric thickness or care method, so do not assume warmth, stretch or laundering behavior from the word “sweater.”