What are the Ironman® Train insoles? The Ironman® Train insoles are race-ready footwear supports for long hours on the roads featuring Spenco® TOTAL SUPPORT® Technology, the Ironman® Train is both exceptionally stable & hard wearing. ideal to be used during long training hours, the Ironman® Train prevents overpronation & protects the heel strikers from the ricochet effect of hard road miles. With a one-year unconditional guarantee, the Ironman® Train will keep your stride in line no matter how hard you push yourself. How do they work? Featuring the Spenco 3-POD Modulation system which layers multi-density pods to soften the impact of ground force on the lower limb & leg, the Ironman® Train provides protection & support without compromising on weight. The Race is semi-flexible in the arch & contains deep heel cups to offer heel strike support & maintain optimum posture control. A low-friction top cloth with foot-cooling technology reduces blister causing friction as the antimicrobial fabric reduces bad odours. Sizes based on UK male & female shoe sizes. The first ray drop zone allows for a more efficient toe-off & a linear stride.