Insole with heel cup for motorcycling boot

The invention relates to an insole for motorcycle boots that incorporates an integrated heel cup designed to mitigate excess traction on the Achilles–calcaneus–plantar system produced by the rider’s equinus foot position on the footpegs, particularly during rapid posture transitions in cornering. The configuration aims to homogenize plantar pressure, avoid localized overload of foot joints, reduce numbness, lower injury risk, and improve comfort and performance for motorcyclists. The insole body is made from a material of 58° Shore D hardness (preferably polypropylene, 2 mm thick), and features two fenestrations—one at the metatarsal heads and another at the pulp of the hallux—both filled with a harder material of 60 HB Brinell (e.g., aluminum or carbon fiber) to redistribute plantar pressure. A heel cup occupies the posterior 25% of the insole, with a maximum posterior height of 18 mm tapering to 0 mm toward midfoot at a 21% slope; this heel cup is made from EVA of 52° Shore A (typically ~5 mm at the distal edge). The dorsal surface in contact with the foot can be lined (preferably EVA 52° Shore A, 1 mm) to enhance comfort.