A sole structure for an article of footwear comprising: a sole plate (50, 150) that has a forefoot region; and a stiffness enhancing assembly disposed in the forefoot region of the sole plate (50, 150), the stiffness enhancing assembly further comprising: a compression member (75, 175, 275) disposed at a foot-facing side of the sole plate (50, 150); and a tensile member (70, 170, 270) disposed at an opposite side of the sole plate (50, 150) from the compression member (75, 175, 275); wherein the tensile member (70, 170, 270) is spaced apart from the compression member (75, 175, 275) by a first distance in a first portion of a flexion range during dorsiflexion of the sole structure, and interferes with the compression member (75, 175, 275) during a second portion of the flexion range that includes flex angles greater than in the first portion of the flexion range; wherein the tensile member (70, 170, 270) includes a posterior portion (70a, 170a), an anterior portion (70b, 170b), and a body portion (70c, 170c) disposed between the posterior portion (70a, 170a) and the anterior portion (70b, 170b); wherein the tensile member (70, 170, 270) is spaced apart from the body portion (70c, 170c) of the compression member (75, 175, 275) by the first distance; and characterised in that a width of the body portion (70c, 170c) of the tensile member (70, 170, 270) is less than a width of the compression member (75, 175, 275). a sole plate (50, 150) that has a forefoot region; and a stiffness enhancing assembly disposed in the forefoot region of the sole plate (50, 150), the stiffness enhancing assembly further comprising: a compression member (75, 175, 275) disposed at a foot-facing side of the sole plate (50, 150); and a tensile member (70, 170, 270) disposed at an opposite side of the sole plate (50, 150) from the compression member (75, 175, 275); wherein the tensile member (70, 170, 270) is spaced apart from the compression member (75, 175, 275) by a first distance in a first portion of a flexion range during dorsiflexion of the sole structure, and interferes with the compression member (75, 175, 275) during a second portion of the flexion range that includes flex angles greater than in the first portion of the flexion range; a compression member (75, 175, 275) disposed at a foot-facing side of the sole plate (50, 150); and a tensile member (70, 170, 270) disposed at an opposite side of the sole plate (50, 150) from the compression member (75, 175, 275); wherein the tensile member (70, 170, 270) is spaced apart from the compression member (75, 175, 275) by a first distance in a first portion of a flexion range during dorsiflexion of the sole structure, and interferes with the compression member (75, 175, 275) during a second portion of the flexion range that includes flex angles greater than in the first portion of the flexion range; wherein the tensile member (70, 170, 270) includes a posterior portion (70a, 170a), an anterior portion (70b, 170b), and a body portion (70c, 170c) disposed between the posterior portion (70a, 170a) and the anterior portion (70b, 170b); wherein the tensile member (70, 170, 270) is spaced apart from the body portion (70c, 170c) of the compression member (75, 175, 275) by the first distance; and characterised in that a width of the body portion (70c, 170c) of the tensile member (70, 170, 270) is less than a width of the compression member (75, 175, 275).