Based on this product's specifications, here are some alternatives and similar models
Protective Silicone Case Tech-Protect for Apple AirPods Pro 3 — Navy Blue
Summary description:
Silicone protective case by Tech-Protect designed for Apple AirPods Pro 3. Made from soft-touch silicone in navy blue, it protects the charging case from scratches, minor impacts and dirt while maintaining access to ports and pairing button. Slim, lightweight and easy to install, suitable for daily use, travel and pocket storage.