The waist pad has good slow rebound performance. Memory cotton has the characteristics of slow rebound, and the one with fast rebound is ordinary sponge. Sitting in the office all day, you should choose a memory cushion. Slow rebound material can adjust the compression of irregular shape to the most balanced state, that is, it can slowly deform to adapt to the compressed object and provide the most uniform supporting force. The identification method is: the advanced slow rebound sponge feels very comfortable and has the feeling of kneading dough when pinched. Rebound almost slowly or feel a little dizzy or stiff. At the same time, this kind of high-grade slow rebound has good temperature sensing and will become softer with the increase of temperature. When the human body comes into contact with slow-rebound materials, the pillow will become softer with the transfer of body temperature, which can better wrap and support the human body.