These bags are heavier, not the thin paper type. Also, included in the package, was a foam filter. I hadn't replaced mine in a very long time (if ever). Highly recommend these over the generic ones.
These u bags have more suction than the o cloth ones and make it a bit harder to push our new silver Kenmore upright and it's noisier, worse of all they leak dust and stink up the house after just a few uses. The o bags are expensive but our allergies dictate our needs for o type bags. Plus my house smells the same- before and after vacuuming with the more expensive bags
I purchased 2 packages of upright vacuum cleaner bags and they were shipped almost immediately to my home.
I have used these cloth bags in my vacuum for years and am always pleased at how well they perform.