These are just like SICURIX normal ID badge holders, but with the added safety of reflective vinyl for extra visibility at night and when conditions are less than favorable. Simply attach your ID card or badge to your person for easy identificatioProvides easy access to your ID badge.Pre-punched to easily attach to card reels, lanyards, chains or barbs.Made of translucent, sturdy vinyl.Maximum insert size: 2 1/8" x 3 3/8" ; Horizontal