GPAD is available as a full set, which includes: Rib, Hip, and Back GPADs, or in individual GPAD component sets: Rib, Hip, or Back. GPAD easily installs to standard fiberglass seats or high-performance Ribtect carbon fiber kart seats. GPAD can be installed in a variety of methods. The Science Inside GPAD®: Simply put, the more g-force and shock that is applied to the technologically advanced REASORB® material in GPADs, the more efficient it becomes, and the more it outperforms racing gel and other materials. REASORB® is a unique visco elastic polymer that exhibits fluid-like properties at rest. However, it will act like a solid when a shear force is applied, such as shock or g-force. REASORB® will not dryout, melt, or freeze. It is also 50% lighter than racing gels. Traditional foams, neopremes, and gels don't even come close. In high performance racing situations, the more energy dissipation the better - the less energy transfered from the track to the chassis to the driver the better. Less pain, less bruising, less fatigue, resulting in better overall driver performance which translates to better lap times more consistently.... Win better more often... GPAD® GPAD® Engineering: GPAD is the original and first professional design and best solution available for energy dissipation - period. GPAD has invested significant time and effort to design and engineeer this widely accepted product. We have seen copy-cat like products that are inferior. Be sure to request the original - GPAD. The GPAD energy absorbing and dissipating material (REASORB®) has been approved by FIA for use in the Formula One HANS device as a highly efficienct alternative to the air-bladders previously used. The photo to the left is a prototype used by FIA for testing, and is also a testament to the high degree of functionality and effectiveness of GPAD. This same material is used extensively in protective padding in NHL, MLB, and NFL.