This problem is closely related to the quality of clothing fabrics. Generally, natural fiber fabrics, such as cotton, linen, silk, wool, etc., have relatively large shrinkage rates (generally reduced in size), but with the improvement of textile processing, the shrinkage rates of many finished fabrics have been completely controlled within the national standards. According to my experience, more washed fabrics often appear in knitted fabrics (fabrics are generally divided into knitted and woven fabrics), especially rib or cotton wool. As mentioned above, if it is not handled well, it will change to varying degrees.