Krone Kalpasmos Replacement Earpads Compatible with Sony MDR-ZX310, Ear Cushion Compatible with Sony MDR-ZX330BT/DR-BT101/WH-CH500 and 70MM Round On-Ear Headphones
Amazon.com: Sony MDR-ZX310AP ZX Series Wired On Ear Headphones with mic, Black : Electronics
Sony MDR-ZX310 WQ On-Ear Stereo Headphones Quick folding / Sound Monitor- White | eBay
Sony MDR-ZX310-BLACK Wired Headphones with Lightweight Adjustable Headband and Swivel Earcups - Walmart.com