*Class 1 Medical Device. Clinically proven up to 80% effective in helping to relieve back pain, sciatica or piroformis syndrome after just one use! *Helps relieve discomfort in your lower back, along your sciatic nerve down to the buttocks and lower legs *Provides gentle targeted compression to the key Acupressure Point at the centre of the Calf Muscle *Simple, discreet, quick and natural relief anywhere, anytime *Easy to attach and detach. Adjust your INSTA LIFE slightly up or down under your knee to determine your own optimum INSTA LIFE position for maximum effect *Works on either leg