How does the sizing run?

Small. The listed sizes are Asian sizing, roughly 1 to 2 sizes below US and European equivalents. If you fall between two sizes, take the larger one and check the size chart before ordering.

Is this warm enough to wear as a jacket?

No. The hollow-out crochet weave is open and the polyester is thin, so it adds coverage and style rather than warmth. Treat it as a summer layer over a top or dress.

Polyester, with lace trim at the edges. It is not a cotton crochet piece, so it has little stretch and should be washed gently to avoid snags.

How should I care for it?

Hand wash or use a mesh laundry bag on a delicate cycle, and dry flat. The open weave and lace trim snag easily, so keep it away from velcro and rough jewelry.

Will the color match the photos?

Not always exactly. Screens display color differently, and bright shades like fluorescent yellow and orange are the most likely to look different in person.