1, PP back puller is hard, with strong massage force, which can deeply massage muscle tissue and help relieve muscle fatigue and soreness. However, due to its high hardness, it may bring discomfort to people.

2. The silicone back pull is soft, and it is comfortable to use, which will not irritate the skin and will not cause excessive pressure. Silica gel also has good elasticity and durability and can withstand long-term use. Rebound device is a commonly used massage tool, which can relieve the pain and stiffness of cervical spine and shoulders, promote blood circulation and relax the body.