Asterisk Carbon Cell Pro 1.2 Knee Braces The newly upgraded Carbon Cell Pro has the same frame as the regular Carbon Cell 1 with a few modifications to its fitment. Our dedication to making the finest quality, fitting and performing knee braces in the world has led us to the design and development of the CC Pro. The CC Pro is manufactured from Military Spec and Aerospace grade carbon fiber prepreg that is made in America, the finest in the world.