The red cutout-shoulder turtleneck is listed in S, M and L. Its one-shoulder opening is the main styling decision. Before choosing a size, decide whether you want that opening to show skin, a base layer or nothing once a jacket is on. The listing does not say which shoulder is cut out or give the opening’s dimensions.

Compare three real outfit plans

For a bare-shoulder look, inspect photos of the exact red item to see where the cutout begins relative to the turtleneck and bra strap. For a thin base layer, lay a top you own beneath the product photo and decide whether its neckline and color would be visible through the opening. For a jacket outfit, compare the jacket’s shoulder seam and collar with the cutout: the feature may be covered while you wear the outer layer. These are planning checks, not claims from a try-on.

Use the ranges as a first question, not a fit promise

The listing pairs S with 34–36 in bust and 26–28 in waist; M with 37–38 and 29–31 in; L with 39–40 and 32–33 in. It does not say whether these are body recommendations or finished sweater measurements. If your bust and waist point to different rows, request the finished chest, hem and shoulder-opening measurements. Also ask for neck opening and sleeve length if you plan to layer a fitted top underneath.

Check the fabric and care you will actually accept

The stated blend is 50% viscose, 28% polyester and 20% nylon, described as slightly stretchy; care says machine wash cold and tumble dry low. Those facts do not establish warmth, comfort against skin or how the cutout sits after laundering. Decide on the visible layer first, then confirm the opening and garment measurements with the store before ordering.