The NillyNoggin™ cap is designed specifically for the medical procedure, EEG. It assists in protecting the leads from wandering little hands as well as adds a fun colorful cap to cover-up the ‘scary’ look of the leads. It is comfortable, breathable, cool and snug. Handmade in the USA of imported fabric. They are one size fits most from child to adult. The NillyNoggin™ cap is 95% cotton and 5% spandex. Care Instructions Machine wash warm, line dry. May iron if needed. Some shrinkage may occur. Recommended wash before use.