3M™ PELTOR™ X1/X2 Earmuff Probed Test Cushions 393-3001-2, 2 ea/Case 3M™ PELTOR™ Earmuffs X1/ X2 Probed Test Cushions easily snap into the 3M™ PELTOR™ X-Series X1 and X2 Earmuffs (sold separately) to allow for fit testing with the 3M™ E-A-Rfit™  Dual-Ear Validation System. The complete system issues a pass or fail rating based on the employee's personal attenuation rating (PAR) when wearing 3M™ PELTOR™ X-Series X1 and X2 earmuffs. 3M™ PELTOR™ Earmuff Probed Test Cushions for use with 3M™ PELTOR™ Earmuffs X-Series X1 and X2 and the 3M™ E-A-Rfit™ Dual-Ear Validation System Probed cushions can be cleaned with hygiene wipes and reused Adapter clips hold microphones next to earmuffs during testing Suitable for multiple uses and can be cleaned with hygiene wipes Easily click into X Series Earmuffs to test effective wear of protection