This is the PAJAMA PARTY set from FREE PEOPLE in a size M. Made from a poly/spandex blend-has the feel of soft satin. NWT-Retails for $88. I just bought these but they are too way long for my 5'4" frame. I went by the inseam (28.5) listed on the website, but the crotch is dropped and hangs low, so the inseam isn't a good indicator of pant length. The length from the waist to the bottom hem is just under 41in long. Use that to determine length on your frame. These are unworn/unused and in excellent condition. NOT a store return.