The key components are the Polymer Nucleus and the Fiber Annulus. The Polymer Nucleus allows for axial compression, while the Fiber Annulus allows for controlled range of motion allowing 6 degrees of freedom.
As far as the Spine Blogger can see, this disc is the current winner in design. So listen up investors, if you are really looking for a solid investment, hear is your winner. And don't forget, when you cash out, don't forget the SpineBlogger. We want to know what our readers think?