Use for all seasons, warm in winter and cool in summer, suitable at all times. Four level of automatic shut off, applicable to all demands. Adapter with low voltage power, wire protects with flexible-tube, the overall design is safe and reliable. Extra fleece-like cover are warm in winter and are washable. Can lie flat safely on the floor directly and are economic Superficial is more then 99% aluminum with anodizing finish. You can wipe away dust and excretion with soft wet cloths.