Well, I've never been good at cleaning my filters. (Come on. Admit it. You too.) As a result, I lost a lot of suction power in my vacuum. It got to the point where I needed new filters but was worried about paying the Dyson price. Eeeekkk. What the hell. Decided to try these. you entered. I put them in my car. (Perfect fit.) Like I had a brand new car and was a vacuum cleaner nut that day. Adding this purchase to my list of the best decisions I've ever made in my life. (Don't judge. I take it where I can.)