Satin in a brown/maroon shade, fitted but with a corseted top that holds you in and pushes you up. No need to wear a bra, even for women with a larger chest. I am a 30H, I was comfortable without wearing a bra when I tried it on. This dress is brand new, never worn and has all tags on it still. Size Medium (I am 5'6", 153-150 and it fits me well). Measurements from the website: Medium - 36.5-39 BUST, 28-30.5 WAIST, 38-40.5 HIP.