Very durable and flexible to accommodate a tree that has been "open" for the Christmas season. The only downside is the size of the bag. We have a 7ft tree and I thought we would be able to squeeze it into this bag  but you couldn't. We were only able to fit two sections of the tree into the bag. Honestly, I think that even a 6ft tree would be hard-pressed to fit into this bag completely. Also, it is not structured as pictured, it is a loose bag.