Abstract: The invention relates to a stopper for application to a container of the type with a base, an emptying duct, a lid, mounted on the base to pivot between an open and a closed position, a hinge with elastic return which holds the lid in the open position thereof and locking means, for locking the lid on the base. The stopper comprises positive unlocking means for the lid from the base, which are manually operated to provide a force to disengage the holding means. The base is a unitary construction and made from plastic material, the lid is made from the same plastic material and the leaf of the hinge is in an elastomeric plastic material.

Abstract: The invention relates to a footwear item that is designed for racket sports. The inventive item comprises a sole consisting of an outer face (1a) which is intended to come into contact with the ground and an inner face (2b) which is intended to come into contact with the foot of the user. According to the invention, the sole includes a dynamic element which can be used to store and release energy when said sole is subjected to lateral stresses. The aforementioned dynamic element comprises (i) a return element (3) which is positioned in the sole such that it expands at least partially beneath the area corresponding to the arch of the foot and at least partially beneath the area corresponding to the front part of the foot and (ii) at least two elastically-deformable lateral ground support parts which are located longitudinally on either side of the metatarsus support zone.