This is the Sparco Circuit II which is a wider version of the standard circuit seats for drivers who need a little more room. The Circuit II started out as a shell built with lightweight aramadic fiber reinforced fiberglass materials just before getting wrapped in an impact-absorbing and fire retardant fabric. The Circuit II also includes integrated bolsters which will protect the head along with a unique seat design which helps separate the driver's leg.
The Circuit II is compatible with the Hans Device for extra protection, and it is FIA approved.
Sold individually.