Introducing the Holy Grail of OCR footwear - the Icebug Zeal RB9X! With a perfect balance of stability, flexibility, and grip, the 2016 Icebug Zeal RB9X brings true innovation to the obstacle course racing market. The upper material has been updated from previous season to a very durable, yet soft, Kevlar. Together with the lacing system it embraces the foot firmly, but it is the midsole construction and the HGMS2 technology that is the true innovation.