This a new yarn with low capillarity effect in Tough Polyester which, in case of abrasion of the fabric during the assembly stage of a tensile or tent structure, prevents the dirt from spreading along the thread. In fact, on observing the inside of a large covering, one often notices dark stains in the middle of the cloth or near the seams. These stains are characteristics of the dirt which, penetrating inside the thread, spreads for a length of 8/10 cm. By using a Low Wicking fabric, this problem is eliminated, because the material of which it is made hinders the absorption of dirt and its spreading.