"EXTENSIBLE TENSION AND ADAPTABA TO ALL SHIRT CUPS" characterized by the fact that it is composed of two twin pieces, flexible laminar material, which complement each other to cover the entire surface of the back of the face of the neck, under the which is housed, to which end said parts have, at the ends that are superimposed to establish the rear part of the tensioner, parallel grooves, which serve as a guide or slide to eyelets, which fix on both ends of the overlapping parts, paths transverse strips, coupled, respectively, to the internal and external face of the two halves to be joined, so that by bringing them closer or separating them from each other, it is possible to lengthen or shorten the length of the tensioner. (Machine-translation by Google Translate, not legally binding)
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