I love my 3m work tunes, they are one of the best things I own, but the original ear pads were cracked and brittle for years and years of use. I was highly considering buying a new pair but it just didn’t sit right with me since they still work just fine. Then, these replacement pads came up in my search! I was so excited to give my work tunes a new life. It was surprisingly easy to rip off the old ear pads, and the sticky residue that remained on the headphones was easy to rub off with my fingers. I cleaned the surface with rubbing alcohol for good measure. The new pads are peel and stick. I found it slightly difficult to line them up perfectly before they stuck down with the super sticky two sided tape. I’m slightly concerned with the thickness of the black plastic that covers the memory foam, it’s much thinner than the original plastic, which is what failed. They are much squishier than the original pads and feel cool (in a comfortable way) on my ears. Time will tell if the black plastic holds up. Right now, I’m super stoked that I was able to save my worktunes.