This is a black Undress that fits Adults sizes XS-XL (marked as multi-size B) and is midi-length. I have never used it so it's in perfect condition. Here is a link to how it works: https://shop.theundress.com/pages/how-it-works The Undress is the world's first mobile changing room, and dress of it's kind! Runners, Cyclists, Yogis, Triathletes, Travelers, Super Moms, Beach or Pool goers - all active women - can benefit from this amazing invention. No need to change with a flimsy towel, behind a bush, or dirty public restroom - The Undress has you covered! Have one in your gear bag, or in the trunk of your car at all times! You'll never know when you'll need one! The Undress is the quickest and easiest way to change clothes in public. Faster and Easier - Change outfits in half the time it would take by using a towel, or fumbling in the car! This is not just a dress - The Undress - has Patent Pending features to helping you change from one outfit to another without getting naked! There is nothing else like it! Use it as a causal summer halter dress, a swimsuit coverup, or just to do a quick change of clothes in public without worry. The Undress Works in 4 easy steps: Step 1- Slip In and bring dress to your waist. Step 2- Slip under - Slip the front panel underneath your bra, or top. Step 3- Slip Over - Slip the drawstring loop over your head and secure the cord lock Step 4 - Undress! To redress, reverse the process with your new outfit!