Imikorere yimashini ishimisha cyane cyane imiterere yindabyo nziza ya convex ya convex yagabanutse kandi igaragara hagati yintera.Imyenda nyuma yubushyuhe yongerera cyane elastique hamwe nuburyo butatu bwo kwiyumvamo, kandi kugabanuka kwimiterere ni byiza cyane kandi byiza.Imashini ishimisha ikoreshwa cyane mu nganda z’imyenda, kandi irashobora gukoreshwa mugukora ishati nziza yumugabo, ijipo, igitambaro cyo kumanika imitako, igitambaro cyo gupfuka, nibindi.