Rubbish. Much, much thinner material than Miele bags (less than twice as thin I believe). This means that dust can penetrate through the material of the bag, coat the inside of your vacuum and be released back into the air. Not good for your vacuum or cleaning efforts. In addition, Original Miele bags can be opened at the side and are therefore about twice as wide as these bags, which do not have opening sides. Inexpensive = cheap! I think you get what you pay for. Next time I'll pay a higher price for the original.