Style SMART Series / Style SMART Series MTG MTG Pelvic Support Chair, Floor Chair, Stool, Meeting Chair, Office Chair (Style SMART / Style SMART, Black) [Unique Posture Care Function: Chiropractic Support System] The key to creating the correct posture in chiropractic is to stabilize the pelvis and maintain the S-curve of the spine. Style SMART supports the "iliac bone" to stabilize the pelvis, and also supports the "lumbar spine" to create the S-curve of the spine, supporting the correct posture. I used it for several years, but have been storing it since then. There are no noticeable scratches or stains from use. I think it can still be used. Brand: Style Color: Black Material: Structural material: Polypropylene, Cushioning material: Urethane foam, EVA resin, Upholstery: 90% polyester, 10% polyurethane Product Dimensions: 37 depth x 45 width x 38 height cm Size: Approximately W450xD370xH380 Thank you for viewing. Note: 1200 yen discount for direct transactions