Today on our 2013 Kia Optima we'll be test fitting the Thule Force XXL Rooftop cargo box, measuring 21 cubic feet, in aeroskin black, part number th626. With the Thule Rapid Traverse roof rack system assembled onto our vehicle we'll begin our test fit by placing the Force directly onto our load bars. With the feet hanging out of the bottom of the box we can adjust them as necessary to fit around… see more >