What makes this process precious is its extreme softness combined with resistance over time to washing and use, obtained thanks to the dense and complex structure of the fabric in a canvas weave. There are two essential factors that determine its quality: a perfectly perpendicular warp and weft weaving and, even more importantly, a fine and uniform yarn. The denser the structure and the finer the threads , the higher the quality of the percale. In fact, the number of threads per square centimeter (in TC, thread count ) is always indicated: as many threads for the weft as for the warp, starting from a minimum of 40TC, up to products of 600TC. The number of threads is directly proportional to the lightness, softness and refinement of the fabric.