HP3 technology is a three part comfort system featuring soft foam down the full length of the insole, a memory foam heel pad, and a soft EVA forepart to cushion the foot while you walk. Premium full grain or novelty leather uppers, genuine soft leather lining. Luxuriously soft leather socklining with a stud system allowing air to circulate into the layers of foam beneath the foot. 55mm (approx 2 1/4") genuine leather stacked or a synthetic novelty weave wrapped heel. Molded rubber outsole provides excellent traction and durability.