Have used Envirocare MM (and Y) bags for many years. Very good bags at a very good price. I particularly like the ability to close the opening when the bag is removed for disposal, which keeps dust and dirt inside. The only downside I found with this brand is the "Y" pockets. They don't really "fit" in my Hoover wind tunnel car unless the top and bottom are folded to fit, effectively reducing the space available. Overall, I like them so much that we will continue to use them as long as they are