Abstract: A bending base of a footwear element provided for the practice of a sporting activity using a gliding or rolling apparatus, comprising structure for removably fixing the footwear element in relation to this base, the base having flexibility along the length of the foot, and structure for removably fixing, against the base, at least one element for fastening to the apparatus.

Abstract: A boot adapted for the practice of a sporting activity using a gliding or rolling apparatus, in which the heel of the boot is free during movement of the foot, the front end of the boot being provided with an element for fastening to the apparatus. The boot includes a base and an adaptation structure having a first portion to be fixed in a front zone of the base, and a second portion to be fixed in a rear zone of the base, each of which can be removably fixed.

Abstract: An article of footwear including a sole assembly and an upper, the upper including a flexible envelope, the boot extending lengthwise from a rear end to a front end, widthwise between a lateral side and a medial side, and height-wise from the sole assembly to an upper end, the boot including a stiffener located in the area of the rear end. The boot includes a reinforcement which is at least partially superimposed onto the stiffener.

Abstract: A boot including a sole assembly and an upper, the boot extending lengthwise from a rear end to a front end, widthwise between a lateral side and a medial side, and heightwise from the sole assembly to an upper end, the boot including a flexible envelope adapted to surround the ankle of a user, the envelope demarcating the upper end of the boot, the boot further including a gripping member affixed to the envelope in the area of the upper end of the boot, on the side of the rear end. An inextensible reinforcement connects the rear end to the gripping member.

Abstract: An article of footwear including a sole, an upper, a first tightening device for tightening the lateral portion and the medial potion of the article of footwear, as well as a second tightening device for tightening a rear portion. The second tightening device includes a linkage, such as a lace, the linkage including a first inextensible portion and an elastic mechanism, the first inextensible portion extending along the rear portion, as well as along at least one of the lateral and medial portions, the elastic mechanism biasing the first inextensible portion in a direction reducing the length of the linkage, the article of footwear further including a reversible immobilization mechanism for immobilizing the inextensible portion with respect to the upper.