These are great grocery bags- roomier than the ones you get at the store and certainly sturdier.  I have several reusable grocery bags I try to use and these bags are right up there with the best of them.  They hold more than the disposable ones you get at the grocery store and they are made of nylon so they won't rip and spill your groceries all over the car.  But the best thing about these bags is that you get five of them all in a neat little package!  This is much easier to keep track of and to keep in the car so you will have them when you need them.  The biggest block I have found to using my reusable bags is getting to the store and not having them with me, or only having one or two of them.  With this package that isn't a problem anymore, five bags are always with me. They are a snap to refold, pop back in to the case and back in the car.  I highly recommend these bags for being useful and convenient!