These are plastic double sided id card holders. They will take one card each side of the holder. The cards size is 86 x 54mm same size as a credit card. We also sell the lanyards and badge reels if you require this as well. Once again thank you for looking at our products, and if you have not check out our shop we have put some links for you below to save you some time. Please use the navigation bar to the left to see what other products we have in our store. Please note: During busy period, it may take Royal Mail a bit longer to deliver your order. We appreciate your patience and understanding.