Product details:

Instrument Sterilization Pouches - See sterilized packs at a glance! Self-Sealing closure has extra-strength adhesive for sealing, no tape needed. Prefolded for a quick and correct closure. - External Process indicators printed with distinct color changes quickly identify pouches that have been exposed to sterilization and by which type. - Suitable for table-top sterilizers using gas or steam. - Don't see your question answered