This is a standard sizing chart for a unbranded, classic-fit long-sleeve top—likely a casual or basic layering piece such as a thermal, crewneck sweater, or lightweight knit shirt. Key measurements include衣长 (garment length), 肩宽 (shoulder width), 胸围 (bust/circumference), and 袖长 (sleeve length) across S to XL sizes, indicating consistent proportional grading. The garment appears designed for relaxed-to-regular fit with moderate ease: chest increases by ~4 cm per size, sleeve length by 1–2 cm, and total length by 2 cm per step—ideal for everyday wear without tight constriction. Fabric is likely cotton, cotton-blend, or fine knit, given the precision of measurements and typical use case. Suitable for layering under jackets in fall/winter or standalone in mild spring weather. No visible logos, embellishments, or distinctive design features suggest a generic, mass-produced essential rather than a designer or branded item. Ideal for consumers seeking reliable sizing transparency before purchase, especially in e-commerce contexts where physical try-on isn’t possible. The clean, numerical presentation aligns with Asian-market apparel listings (e.g., Taobao, Shein, or domestic Chinese brands), prioritizing functional fit over branding.