The Pocket Harmonizer, which contains the same materials as our Cell Phone Harmonizers, is designed to transmute the EMF signals that are in your environment. The composite material is a matrix of specific materials and geometries that are designed not to block the EMF signal, but rather to change the spin field (information field) from one that is disruptive to one that is harmonious. It is the thickness of approximately 4 credit cards and can easily be placed in your wallet, purse, backpack, or pocket. It is perfect for those that do not always travel with their phones but are still looking for EMF protection. These are perfect for students and children who are surrounded by WiFi signals in their schools.