The swing shaft is designed in triangular symmetry, make the whole chair rocking more stable and firm. Mesh seat and back perfectly avoids heat accumulation or sweat in summer. All-weather use, easy to clean. Safe and comfortable rocking feeling with our patio chairs High back makes it very comfortable to rest your head while rocking and provides a comfortable spot for nursing, napping, reading, knitting or watch TV. Non-slip shock adsorption strip to protect your floor from scratching. 4 Limit screws on the front and back reduce the risk of tilting caused by large rocking.