Compatibility 
Headphone Sponge Covers cushions designed for: H51, H51N, H61, H61N, H91, H91N, H101, H101N, SP04, SP05, Supra, Encore, PLX500, and SP Spirit headsets and most standard size office headsets 
Foam Ear Cushions
 Instead of throwing away the full headset, simply replace the headphones cushions. Comfortable as your original ones - Make sure you aren’t downgrading when you replace your ear pads 
 Soft Ear Cushion for Headphones; 
 - Classroom testing 
 - Spa headphones 
 - Hotel headphones 
 - Airline Headphones 
 - for Libraries, Hospitals, School / College, More