This thin, 100% cotton sweater won't feel scratchy even without an undershirt. I think it will be useful in the spring. The size is listed as XS, but it fit me perfectly, and I usually wear a size M. There are no noticeable stains or frays, but please refrain from purchasing if you are sensitive to used items. The flat measurements are as follows: Shoulder width: 41cm Body width: 47cm Sleeve length: 66cm Length: 62cm Please note that it will be shipped folded up.