Amazon.com: TRANSTEK ATH M50X Headband Cover - Also Compatible with ATH M50, M40X, M40, Cloud 2, Cloud Pro, Cloud Alpha, G PRO X, HS50, HS60, HS70 Headphones (Black) : Electronics
Alternative Headband For Audio Technica ATH-M20X M30 M40 M50X Headphone Cushion Replace Cover Pad Head Band - AliExpress