The Rainbow Tie Dye NillyNoggin EEG Cap 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. This Rainbow Tie Dye NillyNoggin EEG cap is super popular! 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 Nilly Noggin prior to use.