Fit 2-Card Holder – Outer Size 3.14”Lx3.93”W and Inner size 2"L x3.3"W , Allow carry 2 Cards, like Credit Card,driver’s license,Work ID,Keycard, BUT ONLY FOR 1 thicker Cards like Proximity Cards or RFID Cards! Quick Access: Easy to open the case through the slot at the top, and to close it by pressing the 2 pieces together. A cinch to encase or remove your badges without effort. Dual-purpose: Ideal for displaying your ID card due to its clear front window. And easy to hide the magnetic card on the back for frequent scanning without removing the case. Sturdy and Durable Badge Holder material is Hard Plastic avoid from broken to prevent glare off of your photo ID badge and from scratches. Easy to Carry: Handy to attach it to a retractable badge reel, lanyard or flat strap through the middle slot. Great for office staff, firemen, maintenance workers, students, doctors, etc.