1x Zip dust Bag, Reusable for Makita VC 2010 L, VC2012L

I have a Makita dust extractor, where I normally use the Makita branded "fleece" bags.I bought these as I hoped I could use and reuse these again and again.I use my dust extractor off the back of wood work machines - table saw, mitre saw, sanders and drills. The suction performance with this bag is significantly less than with the Makita bag, and critically, after filling this bag and emptying is, the performance when emptied was pretty much the same as when it was full :(I get a better result just emptying the Makita bag out into the bin through the hole, than using this bag. I've stopped using them and won't be buying another.