MyBinding.com's 2-11/32" x 3-1/4" magnetic single pocket vertical badge holder attaches to any shirt pocket without clips or pins. All magnets are shielded, so they won't erase magnetic strips on IDs and credit cards. Get 50 2-11/32" x 3-1/4" top load magnetic badge holders with every order. Product number MYBP501N.
Depending on your card it is possible that the magnet on the back of these holders could demagnetize the stripe similar to the way keeping a hotel key next to your cell phone can cause issues. For that reason it is probably advisable to use a non magnetic badge holder if you have IDs with magnetic stripes.
