Retail Price: ¥8,800 This high-performance fitness cushion incorporates a special spring that provides a rebounding force when stepped on, allowing for rhythmic bouncing exercises. The design focuses on providing a better fit and more comfortable exercise experience. Easy and fun shaping while seated! Simply step on it! Easily train your legs with the power of the spring. [Product Name] Bound Cushion [Total Weight] Approximately 2.0kg [Weight Capacity] Up to 100kg [External Dimensions] Approximately Width 320mm x Depth 270mm x Height 220mm [Color] Red [Materials] Polyester, Urethane, Iron 511-22