A sports shoe, including a sole and an upper that rises up from said sole, wherein the upper includes an inner part or core, in which the sports shoe and/or the inner part or core has an inner housing volume (RZ) for a foot of a user defined, during use, by an inner surface of the upper and by an inner surface of the sole and/or by the inner volume of the inner part or core, positioned inside the upper, including an upper-shaped portion and a ground resting portion, the latter adapted to come into contact with the ground or with the inner surface of the sole.