Based on this product's specifications, here are some alternatives and similar models
Cushion set POLY EncorePro HW510/520 Leatherette Black
Summary description:
The POLY EncorePro HW510/520 Leatherette Ear Cushions provide enhanced comfort and durability for your headset. Designed specifically for the EncorePro series, these cushions ensure a snug fit and reduce pressure during extended use. The black leatherette material is easy to clean and maintain, making them a practical choice for daily use.