This is a skirt worn over a bikini or similar swimwear. The material seems suitable for both water and land use. The waist can be adjusted with a drawstring, so I believe it can accommodate a wide range of sizes. ●Size: M ●Worn a few times, but I don't think there are any stains or snags. Please understand that it has been stored at home, so there may be wrinkles, dust may be noticeable due to the black color, and it is a used item before purchasing.