Abstract: Apparatus for sport activity, in particular for skiing and/or snowboarding, usable for example by a skier, suited to splay the legs of the skier, includes a spacer element to which ends fastening mechanisms are coupled in order to couple the spacer element to each leg of the skier by the fastening mechanisms. Consequently, when the skier uses the apparatus, he/she has his legs open by a distance equal to the length of the spacer element.