Found a pair of Sennheiser HD 380 Pro's : r/headphones
Sennheiser HD 380 Pro headphone kit – Student Multimedia Design Center
Replacement Ear Pads Cushion for Sennheiser HD380 HD 380 Pro G4ME One Headphones | eBay
Velour Ear Pads Cushions Earpads Replacement for Sennheiser HD380 PRO Headphones | eBay
How to replace Earpads on Sennheiser HD380 Pro Headphones - YouTube
Replacement Ear Pads Headband for Sennheiser PC350 HD380 Pro PC 350 HD 380 Headset Cushion Cover Bumper Pads|Earphone Accessories| - AliExpress
Replacement Ear Pads For Sennheiser Pc350 Hd380 Pc 350 Hd 380 Pro Headset Parts Leather Earmuff Earphone Sleeve Cover - Earphone Accessories - AliExpress
Eartlogis Velvet Replacement Ear Pads For Sennheiser Hd380, Hd 380 Pro Pc350 Pc 350 Headset Parts Bumper Headband Earmuff - Protective Sleeve - AliExpress
Sennheiser HD 300 PRO 508288 Replacement for Sennheiser HD 380 Pro 502717 | B&H Photo Video