MTG Co., Ltd. Item No.: BS-ST1917F, E-1009BS-R Both are used items. They show signs of use. I used them by placing them on a chair, and while they may improve posture, I couldn't relax while sitting. They didn't suit me. Butterfly-shaped cushion, designed for optimal posture correction. - Color: Brown - Color: Red - Design: Butterfly-shaped - Material: Cushion material Materials: Polypropylene Cushioning: Urethane foam, EVA resin Fabric: Polyester, Polyurethane Size: Approximately W420mm x D390mm x H330mm Weight Capacity: Approximately 120kg Type: Pelvic/Posture Correction Cushion, Floor Chair Retail Price: ¥10,780 (per piece) Thank you for viewing.