I purchased this a few years ago, but I've only worn it twice. 100% cotton, unlined. There's no size label, but I think it's equivalent to a size M to L. ★Size (Please understand that there may be some errors due to amateur measurements) Length: 90 cm (excluding shoulder straps) Width (measured under the armpits): 44 cm ☆Please purchase only if you understand that this is a used item (^_^). ☆I will fold it compactly for packaging, so there may be creases. ☆Please refrain from asking for a discount. *I may change the shipping method to Yu-Yu Mercari delivery without notice after purchase. Please understand (there will be no change in price).