Body Central (brand) strapless dress medium size above the knee. Material is a silky satin possibly polyester. Has been worn many times in the past but not worn in a few years. I have a lot of clothes used, barley worn and brand new with tags. All are in good shape and have been packed away or hanging in closet for year(s). Air conditioner kept. No stains, the elastic on top isn’t super tight. I am a large C- cup bra(used to be D). I like to wear a bra with most everything. Can be worn with or without a strapless bra. I find because the material is silky, a bra helps hold it in place better. Also has a nice dress liner on the inside from underneath the breast area down to bottom of the dress. Very cute & comfy!