The Switchbrush opens and closes seamlessly with the push of a button. With each close of the head, the UV light is activated to disinfect your brush head. Keep it in your purse, backpack, or anywhere else you'd like and it'll be germ free every time you brush. Brushing with water you don't trust in a different country? No need to throw your brush away after your trip. The Switchbrush will sanitize your brush upon returning and in between each brush while you're there.