It is the only product of its kind in the world, based on decompression an original nothing is similar in concept & application and therefore Backrack has been granted patents for its innovation: this SYSTEM is-protected, pending registered design, CE marked, Medically endorsed, based on 45 years clinical experience by an Orthopedic specialist in spinal rehabilitation, and can be used on the whole spine & neck. The Unique concept & application in our system is safe.