First,I'd like to talk about product function. This product helps relieve acute severe pain. Its main function is to assist the lumbar muscles to support the spine, reduce the pressure on the lumbar muscles and spinal joints, and limit joint movements to achieve the effect of pain relief. Besides, this product is also used when carrying heavy objects. It can support the power of your waist. So you can save more power when using power. For example,older elders or people who have spinal injury are suitable for this product. And it will protect their waist.