Abstract: An insert (1) for the customization of a footwear (100), more particularly of a sports footwear, is provided. A footwear that is customizable by using the aforementioned insert as well as a method for the customization of a footwear, the method using the aforementioned insert, are also provided. The insert (1) comprises a layer made of thermo-formable material (3) and a layer made of cork (5) coupled to each other. The presence of the layer made of thermo-formable material (3) allows customization of the footwear according to the morphology of the foot of the individual user; the presence of the layer made of cork (5) allows good thermal insulation and effective transmission of the movements from the user's foot to the footwear.

Abstract: An innerboot particularly for sports shoes which includes a first flap and a second flap in which the tips that are adjacent to the toe region are free and/or cannot mutually overlap. The first and second flaps can therefore mutually overlap in any direction so as to improve user fit.