A shoe sole of the present invention includes a first member 10 including a first deformable portion 11, and a second member 20 including a second deformable portion 21. In a non-worn state, a first lower surface 10d of the first deformable portion 11 and a second upper surface 20u of the second deformable portion 21 are substantially spaced apart from each other in a vertical direction. Under a first load, the first deformable portion 11 deflects downward, whereby the first lower surface 10d can approach the second upper surface 20u until the first lower surface 10d contacts the second upper surface 20u. Under a second load, the deformable portions 11 and 21 both deflect downward with the engagement elements 12 and 22 of the deformable portions 11 and 21 engaging with each other.