This ledge is a great extra spot for my chins to rest or sit and watch the world. The only issue I have with it is that the bolt on the back gets loose over time and eventually the shelf falls off, so you have to remember to tighten it once in a while (I found a thin piece of plastic or wood between the outer bars of the cage and the first washer make it much more steady - I used an unused plastic paint stirrer trimmed to fit since it already had holes in it). There is another version of this item by this brand, called a Sleep N' Ledge, and that has 2 bolts with washers to hold it and is much more stable - I bought that one as a second ledge for my chin cage and I like that one much better; it is also wider and fits 2 chins on it, preventing fights over a favorite spot (which of course is wherever the other chin is). Over all a good buy, but you might have to work with it to find ways to keep it where you want it.