Filter combinations on ecommerce sites are one of the most common sources of both duplicate content and wasted crawl budget at scale.
Index Only What Has Real Demand
A filter combination that matches an actual, meaningful search term may deserve indexing; most narrow combinations don't.
Canonicalize the Rest
Point low-value filter URLs back to their parent category page rather than letting them compete against it.
Monitor for Crawl Waste
Regularly check how much of your crawl activity is going toward filter combinations versus your actual priority pages.
Next step: Use the Search Engine Spider Simulator to see how a crawler is actually navigating your filtered category pages.