These are fabric scraps left over from making items like T-shirts. They are used as filling for domestically-made sandbags. This is the same amount as the 20kg listing, but this one is approximately 30kg of heavier fabric. How about using it as filling for sandbags or grappling dummies? The fabric includes various colors. Please note that some areas may not be visible in the photos. There is over 30kg available, so please comment if you'd like to purchase more. Customers in Hokkaido, Okinawa, and other remote islands may incur higher shipping costs, and an additional 2000 yen may be requested.