In itself, these roles are not bad at all: 1. The Assembly is made super easy and in no time 2. Scroll works great: little resistance, no marks, no scratching and thresholds to be taken without any problems ... Only ... 3. the brakes have not shown in our case, by far the expected effect: the two of the four wheels, which are provided with a locking device, have insufficient adhesion to the laminate. The Babybay was still moving relatively well and without great effort. For use on bed, without further aids, I think the roles rather unsuitable.