The GEL-FLEXKEE™ PRO shoe was developed by analyzing the movement of skateboarders at the ASICS Institute of Sport Science. Asics team of engineers took the precise foot movements of skaters into consideration when creating this shoe. As a result, they added a continuous groove that extends from the bottom of the outsole to the perimeter of the front to help increase flexibility. The upper features an asymmetric construction that makes it easier to keep your foot in contact with the board while maintaining a supportive fit. Meanwhile, the eyelet and tongue construction are devised to help increase durability. Lastly, the GEL™ technology is strategically placed in the heel to help decrease the impact from hard landings.