All of our fabrics are laboratory tested for shrinkage (amongst other things) before they are shipped to our warehouse. Any batches that are not within industry standard tolerances are failed and scrapped. The average shrinkage tolerance for our ranges is between 1-2% in the first wash. After this they will be stable for the life of the garment. If a garment shrinks in the wash above this tolerance then it will have been washed at the wrong temperature or tumble dried on a hot setting.