Designed to keep your valuable, high-tech proximity card safe, clean and secure, Advantus Proximity Badge Holders are a must-have item for any company.;Each clear holder is sized for a 3.38 x 2.38 inch insert in a horizontal orientation with the opening on top.;Just thread a strap clip or neck chain adapter (sold separately) through both sides of the pre-punched hole on the badge holder to lock in place.;Badges or ID cards will be securely protected from the elements and the clips will make them easy to access for swiping at security checkpoints.;Available in a box containing 50 badge holders, these are an excellent choice for small or large office use.