Updated-  the lock tabs on wheels don’t stay up, so rolling stops hand in expected, at least it’s not all 4 wheels, but have to flip them up sometimes . Main hight setting is a bit high when using it on at my loveseat-recliner. Other hight settings will be better like  high beds.  The edges are sharp should be fishes with rounded edges especially if one is prone to rest arms or wrists. It works for needs but I’m looking for something to cover the edges.