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 a retractable key and badge reel that will hold their keys, 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.