1 Pair 50mm Round for KOSS Porta Pro PP KSC35 KSC75 Earphone Sleeve Sponge Earmuff Ear Cushion 1 Pair 50mm Round for KOSS Porta Pro PP KSC35 KSC75 Earphone Sleeve Sponge Earmuff Ear Cushion. Sale price : $8.95 Category : Consumer Electronics