LAST A LONG TIME
Needed to replace filter in my vacuum cleaner and it's great that I can just go into Sears and pick one up!
Sometimes you just need to change the "oops filter" that's what I call it anyway. when Someone messes with the bag and doesn't get it back like it should be, then we have an "Oops" no worries is you have an extra filter on hand
Even though the salesperson that helped me out did not work in the vacuum department he went out of his way to make sure that i found what i needed and that what I had found was the correct part
it does the job but holy cow, it costs a lot to replace a simple sponge.
Expensive but you are not supposed to rinse these clean as I did with my old vac
Not sure what you can saw about a piece of foam other than price is a little high for what it is. Thankfully we don't have to change it very often. That might be because we use the HEPA bags which traps particles well.
We have 2 Kenmore vacuums at home and 2 for our kids and these bags hold up without breaking or letting the dust out