The Silicone ID Case is a slim, streamlined card case with a cut-out window for your ID and a back pocket for cards and cash. Durable yet lightweight, the Silicone ID Case can be attached to your Big O® Key Ring or lanyard for all-in-one, hands-free simplicity. For those who need to carry a security card around the campus or office, you can count on this mighty mini to keep your most important essentials in check.