Roll for sterilization (bellows type) made of high grammage medical paper (60g/m²) and double layer of light blue film in polystyrene/polypropylene. Three lateral seals with impermeable and homogeneous channels for maximum microbial protection. Equipped with chemical indicators for steam or EtO gas (ethylene oxide) sterilizations. Suitable peelability without releasing paper fibers or tearing of the paper upon opening the package. Fully compliant with Directive 93/42/EEC (and subsequent amendment 2007/47/EC) and standard EN-868-1.