The present invention relates to a sports footwear (1) of the type comprising a shell (3) and a cuff (5) articulated to said shell. According to the invention, said sports footwear (1) comprises at its rear portion a connecting element (15) which connects said shell to said cuff and is rigidly constrained to the shell at its lower end and to the cuff at its upper end and which, when viewed in a sectional view on a vertical plane parallel to the longitudinal axis of the sports footwear, has a sinuous shape. This shape allows the connecting element (15), in use, to transmit energy to the sports footwear and also to receive energy from it. By appropriately selecting the size, shape and materials of the connecting element (15), it is possible to obtain optimized control and adjustment of the degree of flexion of the cuff relative to the shell.