STRADIA II SPORT is similar to GIAS, with the exception that it uses shorter side bolsters, for a very comfortable ride, and ease in entering and exiting the vehicle.STRADIA II SPORT is a true full bucket race seat, but it's reclinable options offer levels of comfort standard buckets cannot allow STRADIA II also has a feature for reclining the seat and bringing it back to the original positiion much easier than the original STRADIA.