DIM DIAM'S Action FERMETÉ LACE bra. Underwired bra. The first bra to bring lasting improvements to the natural firmness of the bust without constricting, with no effort and no chemical action. With results in just 7 days! A fabulous figure day after day. Skin is firmer, softer and more toned thanks to the ‘Textile Actif’ [‘Active Textile’] technology, an innovative material that promotes microcirculation of the blood and can be washed any number of times.DIAM'S Action FERMETÉ LACE bra. 80% polyamide, 20% elastane.