To prevent sweat remaining on parts of a foot and a leg to obtain wearing taste without humid feeling by preparing a trunk part by non-water- absorptive woven fabric or net cloth and laminating a porous little-water- absorptive sheet and a knit fabric woven by synthetic fiber with low hygroscopicity in a network.

This inner boot is constituted of a trunk part 2 and a sole part 3. The sole part 3 comprises an upper layer 3A and a lower layer 3B and non-water-absorptive woven cloth or net cloth is used for the trunk part 2 which does not absorb sweat perspired from a leg. The upper layer 3A of the sole part 3 is made by laminating plural porous sheets with low water absorptivity or fabric woven with synthetic fiber into a network. It also almost does not absorb sweat perspired from a foot. Since the lower layer 3B of the sole part 3 is non-water-absorptive and the upper face thereof is constituted equipping a number of dent parts 3B1 on the upper face, sweat liquefied in the saturation condition is collected in the dent parts 3B1. Consequently the foot and the leg are surrounded by air in the inner boots to demonstrate moistureproof and cold protecting effect with warm feeling without humid feeling.