Rolling up in the recess is one of the preferred sleeping positions of cats. Cat hammocks & heater loungers offer excellent features: the lying surface is flexible and soft, as it is not lying on anything. Due to the weight of the cat, the textile surface protrudes downwards and thus forms contact surfaces close to the body; the tightness and the light pressure are pleasant and calming for the cat. If this sleeping area is also installed at an elevated level, the heater lounger & cat hammock meets all the criteria for an ideal sleeping area.