The durable polycarbonate case makes the Rel AMIGO Retractable I.D. Badge Reel & Key Holder super strong, yet very light. Office and nursing professionals want retractable key and badge reels that will hold their keys and other small items (like a USB drive) as well as their I.D. badges, the AMIGO does that and more. The zinc alloy carabiner conveniently clips onto belt loops, bags or purses, keeping your things always accessible, yet secure.