Sports shoe

A shoe comprising:

• a sole as well as an upper that rises up from said sole, said upper comprising at least two portions at least partially mutually displaceable with respect to each other thereby adjusting the housing size or volume (RZ) for a foot in said shoe, and tightening-release means of said mutually displaceable portions, said at least two portions comprising a lateral rear part and a tongue part, said tongue part comprising two sections on one side of the shoe defining a single groove therebetween, said single groove comprising a first section intersecting with a second section, wherein the first section has an oblique progression and the second section is substantially horizontal to the sole, wherein said two sections of the tongue part are directly affixed to each other on the other side of the shoe;
• and
• control means of said tightening-release means arranged at the back of said shoe, said control means comprising at least one first approach-move apart component for approaching-moving apart said mutually displaceable portions at the first section along a longitudinal direction, and at least one second approach-move apart component for approaching-moving apart one of said mutually displaceable portions with respect to the other at the second section along a vertical, in use, direction.