Trail running imposes much more varied constraints than simple road running: uneven ground, roots, stones, slopes, variations in terrain, changes in footing, technical descents, climbs. Without the right insoles, your footing can be unstable, your feet poorly supported, you can tire more quickly, comfort is reduced, and the risk of slipping or twisting your ankle is increased. Specialised trail insoles improve stability, balance, protection and responsiveness — so you can run longer, safer and more comfortably on any type of trail.