This Vertical event card size (3" x 4") badge holder is perfect for office use. The slots allow easy attachment to any lanyard or badge reel. The textured back makes putting in your card in effortless. This holder has a 0.016" thick vinyl front and back. This holder is BPA and Phthalates-free. It meets all the REACH guidelines set by the European Union. It is made of Anti-print transfer material so imprints on the card won't transfer to the holder.