Boot having a floating articulation

Item of footwear intended for sports, comprising:

• a first rigid shell which defines a body which is intended to receive the foot of a user and which extends in an longitudinal direction,
• a second rigid shell which defines an upper which is intended to receive the leg of the user and which extends substantially in an upright direction, and
• an articulation which connects the body and the upper, said articulation allowing rotation of the upper relative to the body in two axes of rotation which are substantially perpendicular to each other,
• the articulation comprising at least a resiliently deformable element which tends to move the item of footwear into an initial position,
• each resiliently deformable element comprises at least a flexible strip having an inwardly curved shape in the absence of any external stress,
• each resiliently deformable element comprising two flexible strips which are substantially V-shaped or U-shaped so that each flexible strip comprises two branches, each comprising a first end and a second end, the first ends of each flexible strip being connected to each other and the second ends of each flexible strip being connected, in the case of one of the branches, to the body and, in the case of the other branch, to the upper, wherein,
• said articulation allows translation of the axes of articulation relative to the body in order to bring the axes of rotation of the articulation substantially into alignment with the axes of rotation of the foot relative to the leg of the user.