This is a silk nightcap. I bought this as a spare for myself, but I'm selling it because I ordered the wrong size. I opened it to check the contents, but I have never worn it. I also discarded the small paper that certified it was silk when I opened it, so it is not included. Please refrain from purchasing if you are concerned about these points. I will package it in a paper bag and an OPP bag to prevent it from getting wet. When putting it in the OPP bag, I will slightly fold the edge of the product's outer bag. - Brand: Utukky - Material: Silk - Color: Beige - Features: Prevents hair from drying out - Size: 32cm Thank you for looking.