A sole structure (100, 750) for an article of footwear, comprising: a midsole component, a sole member having an exterior surface and an opposite interior surface, wherein the sole member includes: a first flex groove (120a-n, 220a, 320a, 420a) that extends partially through the sole member from the exterior surface in a direction toward the interior surface, and a second flex groove (120a-n, 220b, 320b, 420b) that extends partially through the sole member from the exterior surface in a direction toward the interior surface, wherein the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) form a junction (132a-b, 222, 322, 422), wherein the junction (132a-b, 222, 322, 422) is located in a forefoot area of the sole structure (100, 750), in one of: an area supporting the first metatarsal head; in an area supporting the fourth and/or fifth metatarsal head(s); in a big toe area; or in an area corresponding to the fourth toe and/or the fifth toe; and a flexible cleat (130a-b, 200, 300, 400) extending in a direction away from the interior and exterior surfaces of the sole member, wherein the flexible cleat (130a-b, 200, 300, 400) includes: a first cleat component (134a, 202a, 302a, 402a) that includes a first side extending along the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) and a first nadir portion along the first side adjacent the junction (132a-b, 222, 322, 422), and a second cleat component (134b, 202b, 302b, 402b) that includes a second side extending along the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) and a second nadir portion along the second side adjacent the junction (132a-b, 222, 322, 422). a midsole component, a sole member having an exterior surface and an opposite interior surface, wherein the sole member includes: a first flex groove (120a-n, 220a, 320a, 420a) that extends partially through the sole member from the exterior surface in a direction toward the interior surface, and a second flex groove (120a-n, 220b, 320b, 420b) that extends partially through the sole member from the exterior surface in a direction toward the interior surface, wherein the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) form a junction (132a-b, 222, 322, 422), wherein the junction (132a-b, 222, 322, 422) is located in a forefoot area of the sole structure (100, 750), in one of: an area supporting the first metatarsal head; in an area supporting the fourth and/or fifth metatarsal head(s); in a big toe area; or in an area corresponding to the fourth toe and/or the fifth toe; and a first flex groove (120a-n, 220a, 320a, 420a) that extends partially through the sole member from the exterior surface in a direction toward the interior surface, and a second flex groove (120a-n, 220b, 320b, 420b) that extends partially through the sole member from the exterior surface in a direction toward the interior surface, wherein the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) form a junction (132a-b, 222, 322, 422), wherein the junction (132a-b, 222, 322, 422) is located in a forefoot area of the sole structure (100, 750), in one of: an area supporting the first metatarsal head; in an area supporting the fourth and/or fifth metatarsal head(s); in a big toe area; or in an area corresponding to the fourth toe and/or the fifth toe; and a flexible cleat (130a-b, 200, 300, 400) extending in a direction away from the interior and exterior surfaces of the sole member, wherein the flexible cleat (130a-b, 200, 300, 400) includes: a first cleat component (134a, 202a, 302a, 402a) that includes a first side extending along the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) and a first nadir portion along the first side adjacent the junction (132a-b, 222, 322, 422), and a second cleat component (134b, 202b, 302b, 402b) that includes a second side extending along the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) and a second nadir portion along the second side adjacent the junction (132a-b, 222, 322, 422). a first cleat component (134a, 202a, 302a, 402a) that includes a first side extending along the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) and a first nadir portion along the first side adjacent the junction (132a-b, 222, 322, 422), and a second cleat component (134b, 202b, 302b, 402b) that includes a second side extending along the first and second flex grooves (120a-n, 220a-b, 320a-b, 420a-b) and a second nadir portion along the second side adjacent the junction (132a-b, 222, 322, 422).