The striped-trim V-neck sweater vest is offered in Brown and Gray from S to 2XL. Its chart includes both bust and hem. Those are separate fit points: a shirt can have room across the chest but bunch where a narrower vest hem meets it.

Check the lower edge against your shirt

The S row lists bust 40.6 inches, hem 34.3 and top length 23.2: the hem figure is 6.3 inches smaller than the bust figure. At 2XL, bust is 50 and hem 44.5 inches, a 5.5-inch gap. Compare these listed figures with a shirt you intend to layer and with a vest whose lower edge already lies where you like. Ask whether the seller’s bust and hem numbers are finished garment circumferences; the page does not define the convention.

Measure the shirt near the point where a 23.2–26.4-inch-long vest would end on your body. If the shirt is wider there, it may show or gather below the vest. That can be an intentional layered look, but it is different from assuming the bust number alone settles fit. The source lists slight stretch, without a measured hem stretch range, so request the relaxed and gently stretched hem widths before relying on stretch to solve a tight lower edge.

Check the unmeasured opening

Because this is a sleeveless layer, ask for armhole width and shoulder coverage if your under-shirt has substantial sleeves. The listing gives no such dimensions. It does give 100% acrylic composition and cold-wash, low-tumble care advice. Pick the size that works at both chest and hem, then confirm the selected Brown or Gray option.