So far so good. Definitely a thinner material than the original filter that came with the vacuum but no problems so far. I actually used them on Eureka AirSpeed Zuum AS5203. They don't really fit this model as far as I can tell, but as long as you can squeeze them with some pressure, they work well and hold the foam filter in place. The size is definitely different than the correct filter for this model, but it was just the right size so I didn't have to use the old smelly filter again!