Pillow introduction

A pillow is a sleeping tool. It is generally believed that pillows are fillers that people use to sleep comfortably. Modern medical research believes that the human spine is a straight line from the front, but a curve with three physiological bends from the side. In order to protect the normal physiological curvature of the neck and maintain the normal physiological activities of people during sleep, pillows should be used when sleeping. A pillow generally consists of a pillow core and a pillowcase.