It might seem odd that a pad worn around your calf can ward off lumbar pain but thats because the insta life acts on your sciatic nerve this nerve is the longest and largest spinal nerve in your body beginning in your lower back and extending through your buttocks and down your legs worn below your knee the insta life pad gently compresses the acupressure point in the centre of your calf muscle and interrupts the pain signal so it cant radiate up and down your body you can wear it anyw