This bag was big enough that my Christmas Tree, box and all, slid right in.  It maneuvered pretty well just holding one end, and I'm not that strong.  I was initially concerned about the handle on the end when controlling descent down stairs, but then I saw it has a bigger handle on the bottom that was more than strong enough to hold onto when moving the tree down stairs.  I am extremely happy with this purchase, there is not one thing I could think of to improve on.