Abstract: Sports shoe with improved lateral rigidity, including a shell rigid reinforcing frame and a shell soft portion connected to the shell rigid reinforcing frame. The reinforcing frame includes bands of plastic material extending along a first inclined directrix and a second inclined directrix such that open regions are defined in the shell reinforcing frame. The first inclined directrix extends at a foot side from the tip region towards the region lying above the heel region, and the second inclined directrix also extends the foot side from the heel region towards the foot instep region.

Abstract: Sports shoe has a quarter associated with a shell and has improved lateral rigidity. The shoe includes at least one rigid element which affects the metatarsal region, the heel region and the malleolar region at least at the inner side of the foot. This provides a rigid structure that, for example in the case of ski boots, allows optimum transmission of forces from the leg to the binding and thus to the ski.