Please note that this item has been stored by a private individual and may have some minor scratches. This is a used item. Please refrain from purchasing if you are concerned about minor imperfections. Please understand that this is a used item before purchasing. "Relieving Shoulder Pain, Lower Back Pain, and Body Fatigue from Desk Work" Tominori Kawai Price: ¥1200 People who get tired are sitting in a way that causes fatigue. The textbook posture is not always the best posture. There are "hardworking muscles" and "lazy muscles." Stand up once every hour. A proven method for relieving fatigue, tested in Silicon Valley, USA!