Vinyl RFID Blocking 2-Card ID Badge Holder - Blocks 13.56MHz Signal - Flexible with Middle Shield and Front & Back Sleeves by Specialist ID HEAVY DUTY VINYL - Flexible Without Being Floppy EASY TO USE - Lift Card Flap to Disengage RFID Blocking and Allow for Quick Reading of Signal SHIELDING TECHNOLOGY FOR 13.56MHz R.F.I.D. SMART CARDS - Shielding Prevents Unauthorized Skimming of Your Information UNIQUE AND INTELLIGENT DESIGN - Great for Government Use Warning: If the card holder separates from the shield what-so-ever it will not effectively prevent skimming. Please make sure to wipe down each side so that card holder will not separate.