【ReaLine Core TH Thoracic Unit】 This is an excellent exercise device, often used by professional athletes. I have used it for about two weeks, and it has no noticeable scratches or stains. 【Product Description】 This product corrects the misalignment of the rib cage and pelvis. By wearing the ReaLine Core and performing a simple 10-minute exercise, you can correct the misalignment of the pelvis and rib cage, and effectively learn the "optimal movement pattern" of the spine. ※This item is also listed on other sites, so it may be canceled depending on the timing. ※Since this is a new, unused item, we cannot handle initial defects. If you wish, we will check the operation before shipping. ※Please note that we cannot accept returns to prevent product substitution.