A vertical proximity card holder that has a 0.020″ thick clear vinyl front and a 0.030″ thick clear vinyl back. The card is “locked” in place by a strap clip because the slot goes through the front and the back. Max. Insert Size: 2.38″ x 3.75″ (60mm x 95mm). Sold in packs of 100. Customizing available. Call (800) 798-3343 for details.