StoreSMART - Peel & Stick Business Card Holder with Thumb Notch - Archival Plastic - 100-Pack - TL13056-100 Front is crafted of crystal clear polypropylene Back is crafted of crystal clear permanent adhesive Overall size: 2 5/16" x 3 3/4" Inside capacity: 2" x 3 3/8" (will hold 5 business cards). Opens on the short side with a 1/4" lip and thumb-notch on the closed short side.