Against my better judgment, I thought I would give this cat tree a try with the soft material instead of thick carpet.  I was right, there is nothing for your cats to cling on to.  Its just thin material covering a hard surface. This is only good if they jump onoff each level.  Not to hang on and play around.  Also, the cat tree levels are stacked directly on top of each other, so it is difficult to climb and get to each level.  There are small cutouts, but awkward for full-size cats to maneuver through.  Perhaps if you have kittens, it will be easier.  Im also worried they will get hurt jumping off from over 6 ft in the air since there is no way climb down from each level.