COMPATIBILITY: Fit perfectly on Plantronics C-320M/ C3220 /C325M /T110 Headphones ONLY. Enhance the Sound: Adopting the high-density foam, our earpads will seal around your ears brilliantly, ensuring you excellent noise isolation and extreme comfort even during longer hours of listening. Improved Comfort/ Durability: Super soft high-density memory foam is designed for long-term wearing comfort and has strong durability to extend the life of your headphone. High elasticity, light-weight, and comfortable touching. Easy to Install: simple ways to make your headset brand new again: take off your old earpads and put the new pads align with headset ear loop to stretch them around to cover all edges. NOTE: Your old ear pads will have a negative impact on the sound quality of the headset. Why not buy our new Street27 ear pads to make them look brand new again. Package Includes: You will receive 3 pairs(6 pieces) of earpads.