Tinksky Pair of Replacement PU Foam Earpads Ear Cushions for SONY MDR-Z600 MDR-V600 MDR-V900 MDR-7509HD Headphones (Black) Color: Black.Material: Durable soft PU and foam. Fully compatible with Sony MDR-Z600 MDR-V600 MDR-V900 MDR-7509HD headphones. Ideal for replacing your old, dirty, lost or damaged original ear pads. High elasticity, durable and soft fabric design, for comfortable to wear on your ears. The ear pads can help to improve the bass performance of your headphone.