【Upper Arm Shaper】 Color: Black Material: 90% Nylon, 10% Polyurethane Size: Free Size I purchased this item because it claimed to correct posture and slouching, but the back part is loose, and it mainly supports the upper arms. The compression on the upper arms is strong. Brand new, unopened. As this is an imported item, the sewing may be less precise than Japanese products, and there may be minor scratches or stains. Each item is inspected, but please understand that these are not defects before purchasing.