This organic cotton bag is made of 60 strips of cotton yarns, and the drawstring part is sewed up with five- roll lock stitch which makes the bag firmer. A little shrinkage for the first use is normal ,because it is the characteristic of pure cotton. The cotton is natural without bleaching, and it feels soft with good density. After cleaning the bag can be reused. In addition ,the cotton rope is so convenient for tying that the residue won't leak and it's clean and healthy. Our organic cotton bag can be used in hospitals, clinics, restaurants, food enterprises , family and so on. It can be used not only for decocting, filtering, but also for making tea, packaging coffee beans and so on .