To provide technologies for developing a shoe with the improved cushioning function of a heel part for further reasonable cushioning functions by sufficiently considering the behavior of regions at the moment of grounding.

The cushioning part 1 is formed of a heel cushioning part 11 and a ground contact cushioning part 12 integrally connected to each other by a connection part 13. The ground contact cushioning part 12 is formed in the shape of a beam, and has a deformation inducing part 12a disposed inside. Since the rear end face of the ground contact cushioning part 12 is exposed, a part of the ground contact cushioning part 12 is deformed to the sole side and to an exposed face 15 side with the compression applied to the ground contact cushioning part 12 when the ground contact cushioning part touches the ground. Further, as the ground contact cushioning part 12 and the heel cushioning part 11 collaborate with each other by utilizing the difference between the force applied to the grounding cushioning part 12 when the ground contact cushioning part touches the ground and the force applied to the heel cushioning part 11 after grounding, the impact can be effectively let out, and a series of these behaviors can be visually recognized from behind.