Model number: SHS01055 This is a knit cap made of 100% silk. It's designed to be worn loosely. I'm listing it for men, but it's a design that can be worn by women as well. I previously hand-washed it using Happy Elephant detergent, but there was no particular change. I also sell a CA4LA bucket hat. I'll offer a discount if you purchase them as a set. Please comment if you're interested.