I have a set of 5 and one got lost. My husband bought a replacement that was not Envirosax. It started to split at the seems in just a few months. The original set is more than 5 years old and they are not even fraying. I am very happy with my new Envirosax replacement bag. I love all the pattern choices too. They are very strong and roomy!
I love envirosax, but now they've made them better! They put the snap closure on the top of the bag instead of the bottom, so it can be used to close the bag while it's in use.