Passbook Case Magnetic Interference Prevention Set of 3, 5 sheets per set Size: Approximately 100 x 155mm ⚫︎ Prevents magnetic interference from everyday items such as reading errors and data deletion. ⚫︎ Electronic devices such as computers and smartphones ⚫︎ Magnets in bags and wallets Waterproof packaging and will be shipped via Yu-Packet Post Mini. Although unused, please understand that it has been stored at home before purchasing. * No price reduction * Immediate purchase is possible * Anonymous shipping Also selling individually and in sets of 2. #PassbookCase #Seria #MagneticPrevention #MagneticShield #ReadingErrorPrevention