Definitely a solid quality bag, especially for the price.  Given the picture, I expected it to have support and stitching that would help maintain the rectangular shape, which would help with storage, but it doesn't hold much in the way of shape well at all.  The bag seems to be at the mercy of the tree contained within.  That being said, it seems durable enough and it easily holds the tree.  The wheels are definitely good if you are using it on a hard surface, but they don't move well on carpet (as to be expected, I guess).  Again, I come back to the price point... solid quality for a relatively low price point.