A footwear includes an outsole and an insole. The outsole includes multiple support portions connected to an annular peripheral portion, and cooperating with a hole-defining surface to define multiple block-receiving holes, and an annular inner ridge extending from the hole-defining surface into the holes. The insole includes multiple wearproof blocks and an insole body formed with an annular outer groove and multiple embedding grooves between adjacent pairs of the wearproof blocks. The insole body is supported by the support portions and the peripheral portion with the inner ridge received in the outer groove, the support portions received in the embedding grooves, and the wearproof blocks received fittingly in the holes.