I'm selling this item because I received it from my grandmother and used it a few times, but I no longer have the opportunity to wear it. I believe it's probably silk, but please understand that I am not an expert. There is one stain on the collar (see photo 2). - Color: White - Design: Simple Nagajuban (long undergarment) - Material: Shiny fabric - Sleeves: Long sleeves Thank you for looking.