Our unique world leading technology is now even more advanced to give maximum performance with every impact. Medical professionals recommend Sorbothane? Sorbothane insoles can help limit the trauma caused to a body during exercise such as back problems joint pain tendonitis fatigue fractures and knee pain. They help prevent the re-occurrence of old injuries and offer unrivalled comfort. Sorbothane? Technology Shockwaves are created every time your feet strike the ground causing damage to joints muscles ligaments and tendons. Sorbothanes? unique visco elastic material mimics the characteristics of human flesh and at the moment of impact changes shape to disperse shockwaves sideways. Double Strike Features: - ideal for activities where both the forefoot and heel are subjected to impact shock - Suitable for all sports footwear - Replaces existing insole - Abrasion resistant top sheet |