The FlyRoc 310 is a high performance lightweight Trail and Adventure racing shoe with high levels of comfort, breathability and performance. ; Ideal for off-road and mixed terrain use with good grip in grass and muddy conditions. ; Molded midsole cushioning. ; Meta-flex: Incorporates a groove which is anatomically aligned in front of the metatarsal heads to provide a natural fore foot flex. ; Met-cradle: The upper webbing support is anatomically positioned to cradle the fore foot behind the metatarsal heads and provide a secure foot hold. ; Terra-shank is a polymer shank positioned behind the metatarsal heads providing underfoot protection and extra stability primarily for additional support on longer adventures. ; Endurance rubber compound has been formulated for an optimal balance on wear and mixed terrain grip. ; Endurance last is a generous fitting last ideal for training and long distances. ; Webbing upper support is lacing attached to nylon webbing, which cradles and secures the upper behind the metatarsal heads. ; 11.90 oz. ; Product measurements were taken using size Men's 9, Women's 10.5. Please note that measurements may vary by size.