We engineer every pair of Fit Flop boots with our amazing, multi-density midsoles. Theyre ergonomic, cush, pressure-diffusing & totally wunderbar if youre going to walk a lot! Note on fit. The right size will hug around your instep, but still allow you to wiggle your toes & even your heels (up & down/side to side when you walk, which is fine, just as long as theyre not rubbing). on our original Microwobbleboard midsole generous fit our classic Crush Boots with an inside zip for easy pull on access in buttery soft fine-grain leather