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The Kapok, which lines the outside of each medicine ball and training bag, is much more expensive than the thread waste — albeit much lighter in weight. Lorette once tried pricing his lighter balls higher than his heavy ones, because they used more Kapok, but had to stop because his customers didn't quite get it. He stuffs the ball covers using a long screwdriver, which is extremely hard work. "That's how I got such big shoulders," he says.