UltraCard is a high quality, video grade PVC card stock with a polished, scratch- and debris-reduced surface. A special laminate is bonded to the card during the manufacturing process to improve dye receptivity and increase card life. The card's solid PVC design provides high image quality and medium flexibility and temperature durability. The card will start to bend or warp at about 130-degree F - the temperature that your closed car can quickly reach on a hot, summer day!