What a lovely summer, flirty dress. It is 100% polyester and fully lined with a silky fabric. It is a size medium. It has an elastic waist with shoulder straps. It measures: Waist: 11" with a stretch to 15" Armpit to Armpit: 16" with a lot of stretch Top of Strap to Bottom of dress: Approximately 36" Buy with confidence, careful packaging promised. I love to bundle. Bin A