Ewww! Don't touch that...you don't know where it's been! This product proves that Mom was right - handling everyday objects is a surefire way to pick up nasty germs. Each Bag of Germs has a replaceable pouch of Germ Powder contained within a special bag that deposits the fluorescent powder on users' hands. The Bag of Germs Set includes Bag of Germs, UV flashlight, and carrying case. Bag of Germs measures 27 cm x 18 cm.