It is filled with bead fiber and its filling is dense. It is a swelling material that does not clump during washing. The outer shell is made of cotton fabric. It is used for dough fermentation, yoghurt fermentation and rice brewing. You can preserve meals that cool quickly, such as rice. Machine washable, no fading or sticking. It has a volume capacity of 7 liters and a diameter of 80 cm when opened. This product is produced in our own facility.