This is an all-in-one from Urban Research Sonny Label. I purchased it from the online store, but it was a little too big for me, so I'm selling it. The back of the waist is elastic (see photos). Inseam: 57cm Hem width: 37cm Please note that these measurements are approximate, as they were taken by hand. I've worn it about twice. If you don't mind, you can still wear it a lot. This is a used item, so please refrain from purchasing if you are sensitive to this. Thank you for your understanding of used items.