These Rebel shoes use FuelCell foam in their midsole. It offers a very responsive running feel thanks to its springy cushion created by combining two foam types. The right choice for experienced runners, perfect for interval training and shorter races. The midsole is thinner than most contemporary shoes, and is optimized for mid or front foot landing - we can't recommend these for heel strikers. The fit is relatively spacious. - For a neutral stride - Low torsional rigidity enables a natural stride - FuelCell cushion for a pillowy soft feel - The shock absorption combines PEBA and EVA foams, at 20/80% proportions - The sole stack is 28 mm at the heel and 22 at the front - 6 mm heel to front drop We do not recommend this shoe for people who need arch support.