Zebra’s Z-Band wristbands are made of polypropylene. The direct thermal imaging chemistry is composed primarily of leuco dies and developers. The inks/varnishes used are UV varnishes and water based inks. There is no metal content in or on these particular patient identification bands. Therefore, Z-Band wristbands are considered to be MR-Safe and are available in a variety of sizes and colors. – Wristband, Polypropylene, 1x10in (25.4x254mm); DT, Z-Band Fun, Coated, Permanent Adhesive, 3in (76.2mm) core, 800/roll, 4/box