NITORI Office Cushion Seat O (Bresa) Size: Width 45 x Depth 40 x Height 7 cm Color: Black Weight: 550g Material: Urethane foam Price: ¥2,490 (tax included) Comfortable sitting Supports ideal posture For use in office work, as well as at home Front: Buttocks fit into the donut-shaped hole Thighs fit into the recess Back: Non-slip processing The inner material is urethane for comfortable sitting Uses breathable mesh material New, unused, with tags Please refrain from purchasing if you are sensitive to such things.