These are the best reusable bags on the market. I try other similar products, but keep coming back to Envirosax. They hold a deceptively large amount of merchandise, are easy to refold, and the designs are beautiful. Best of all, they fold so small that I am able to routinely carry up to 5 bags in my purse and still have room for everything else. I feel like Mary Poppins when checking out at the grocery store, pulling bag after bag out of my small purse.