Based on this product's specifications, here are some alternatives and similar models
Cushion/ring set Poly 71781-01 headphone accessory
Summary description:
The Poly 71781-01 cushion/ring set is designed for enhanced comfort and durability of your headphones. Made from high-quality materials, this accessory ensures a snug fit and reduces ear fatigue during long usage. It's easy to install and compatible with various Poly headphone models, making it an essential addition for users seeking improved audio experience.