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
Sony headphone MDR-ZX310: closed type folding type MDR - ZX310 B | eBay
Sony MDR-ZX310 Red Portable Adjustable Over The Ear Stereo Headphones | eBay
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-ZX310 Foldable Stereo Headset - Metallic White : Electronics