The 3MTM ComplyTM steam indicator tape is composed of an adhesive backing and a series of chemical indicator stripes. Use the indicator tape to monitor the exposure of packages to the sterilization process, allowing us to distinguish between processed and unprocessed packages. The tape is designed to secure packages wrapped with treated and untreated reusable materials. DO NOT use the indicator tape to secure packages that have been wrapped with treated woven polyester reusable fabrics as a barrier. Issues with marginal adhesion and/or adhesive residue may occur. This product CONTAINS latex. It does not contain lead.