초록 ▼

A shoe having a toe region, a middle region, a heel region, and a multi-layer, multi-density midsole; the midsole being comprised of at least a shank and a lower layer; the bottom surface of the shank having at least one longitudinal concavity and at least one longitudinal convexity, the longitudina

A shoe having a toe region, a middle region, a heel region, and a multi-layer, multi-density midsole; the midsole being comprised of at least a shank and a lower layer; the bottom surface of the shank having at least one longitudinal concavity and at least one longitudinal convexity, the longitudinal concavity typically occupying a substantial portion of the heel region and the longitudinal convexity typically occupying a portion of the middle region. Collectively, these elements contribute to making the shoe appropriate for both walking and higher impact activities such as running, and simulating the effect, and imparting the fitness benefits, of use on a sandy beach or on a giving or uneven surface regardless of the actual hardness of the surface.

대표청구항 ▼

What is claimed is: 1. A shoe having an upper, a midsole, and an outsole, wherein said midsole comprises:a toe region, a middle region, a heel region, an upper layer, a shank and a lower layer, wherein said shank has a bottom surface, said lower layer has a top surface, said lower layer being locate

What is claimed is: 1. A shoe having an upper, a midsole, and an outsole, wherein said midsole comprises:a toe region, a middle region, a heel region, an upper layer, a shank and a lower layer, wherein said shank has a bottom surface, said lower layer has a top surface, said lower layer being located substantially between the outsole and the shank, said shank being located substantially between, the lower layer and the upper layer, the bottom surface of said shank substantially facing the top surface of said lower layer, and said upper layer, said shank, and said lower layer each having a durometer hardness wherein the durometer hardness of the upper layer is greater than the durometer hardness of the lower layer, the durometer hardness of the shank is greater than the durometer hardness of the upper layer.