Package Include: you will receive 3 pieces of gray EMF protection cell phone sleeves; Put your phone in the pocket and close the bag, and you will become untraceable, which is good for meetings, sleeping or when you don't want to be disturbed Suitable Size: this cell phone pouch will fit most smartphones on the market today; The sleeve measures approx. 7.5 x 4 inches/ 19 x 10 cm; It features a drawstring closure to secure the phone; Please be sure to measure your phone prior to purchasing if you have an extra large phone Powerful Emf Blocker: the EMF protection cell phone sleeve is made out of quality silver which is known for its EMF shielding properties; This ensures protection from harmful EMF and RFID signals; Its silver texture also gives off a sleek and stylish aesthetic that complements its practical use in emf shielding for cell phone Mitigate Potential Health Concerns: with its emf blocker for cell phone, it effectively alleviates potential health issues associated with prolonged exposure to radiation, offering individuals a reliable solution to mitigate concerns about the impact of radiation on their well being How to Test: do not place a cell phone inside the signal blocking phone case and then try to call it; This is not an accurate way of testing the effectiveness; Instead, use a signal meter to compare signal levels inside and outside the protective cell phone case.