Medzer P-5-Type Radiotherapy Mask ensures comfort with 22 percent perforation, a nose hole, and 2.4 mm thermoplastic. It has a non-stick coating, minimal shrinkage, and stability. Hardens in 2.5 minutes, turns transparent when activated, reverts to shape, and offers low absorption for effective therapy. https://www.medzer.com/radiotherapy-mask/rm-1001b