The front binding device (3) for holding a boot on a gliding board (2) has a retaining element (4) able to collaborate with a front part of a boot, and an adjusting device (7) for adjusting a position of the retaining means relative to a gliding board, the adjusting device having a structured element (12) comprising a series of reliefs (13), the structured element being intended to be mounted securely on the gliding board, and a locking element (14) mobile between a locked position in which it is engaged with the structured element in order to lock the position of the retaining element, and an unlocked position in which it is disengaged from the structured element in order to adjust the position of the retaining element.

A skiing equipment (1) is provided, comprising a ski (2) defining a longitudinal direction (2a) and two ends (2b, 2c) and including at least an upper layer (21), a lower layer (22) mutually coupled, and a groove (25) passing through the upper and lower layers (21, 22) between the ends (2b, 2c) and delimited by at least two transverse edges (25a) extending transversely to the longitudinal direction (2a) and two lateral edges (25b) extending parallel to the longitudinal direction (2a); wherein each of the lateral edges (25b) includes a first insert (26) extending parallel to the longitudinal direction (2a) and including a material that is more rigid than the rest of the lateral edge (25b).