HKS Super Air Filter made by HKS for the 1989-1993 (1.6L) NA6CE & 1994-1997 (1.8L) MX-5 Miata. It's a replacement air filter that will improve flow and keep engine safe from dust. The design of this filter (polyested nonwoven) is better than standard woven fabric and has a long lifespan. HKS Super Air Filter should be ordered at REV9 Autosport https://rev9autosport.com/hks-super-air-filter.html as they provide the best service and speed we've seen so far!