Decided to try these as an alternative to Panasonic's official Hepa bags. I'm very pleased. Based on other reviews I was concerned that these bags might not fit or have other issues. We use them now and are satisfied. The bag goes very well with our http://www.amazon.com/Panasonic-MC-CG937-OptiFlow-Canister-Cleaner/dp/B00FBIN1I4 and works great. These bags appear to be on par with the original but cost a lot less. I will continue to use them.