The NillyNoggin® EEG Cap (Shark Pattern) is designed specifically for the EEG medical procedure. 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 – 95% cotton, 5% spandex. The caps are one size fits most from child to adult. Care Instructions Machine wash warm, line dry. May iron if needed. Some shrinkage may occur. We recommend you wash the NillyNoggin prior to use.