This Pauner(TM) ID badge holder holds ONE, TWO or THREE cards and then it is as multi card holder. This dual sided smart card holder, Pauner(TM) badge holder is Reelstrap(TM) -accessory which works perfectly with the Reelstrap, but the badge holder ´s slot holes allows connection also to lanyards, badge reel or standard ID clips. This dual-sided ID card holder is the perfect solution if you need to carry two ID cards, for example a government ID and a hospital ID or HID access card key card. Many of Airport staff also need two ID badges, for example airport security card SIDA, ASIC, RAIC and TWIC card so this double badge holder is good tool for them. This two sided ID holder is intended to use with two cards, but it can carry even 3 pcs cards(thickness 0.76mm, 30 mil standard card) if you put to other side 2 cards one upon the other. This two cards ID badge holder is also excellent dual CAC card holder. If you are looking CAC card holder with lanyard, then buy also adjustable retractable Reelstrap. Together 2-sided badge holder and Reelstrap are perfect CAC card holder lanyard solution. It is the best answer also if you need identification card holder or dual smart card holder lanyard solution. When you need PIV card holder and proximity badge holder this is also good proximity card holder. Pauner ID holders are compatible also with key-bak retractable reel and id badge holder lanyard. If you need also retractable badge holder bulk or ID badge lanyard, buy also Reelstrap. Reelstrap(TM) and Pauner(TM) are trademarks of Pauner America Inc. in United States and in other countries them are trademarks of Pauner Oy(Ltd.) More information on REELSTRAP.NET