This is a wooden platform with a curved shape, providing optimal support for posture correction. It's a hard wooden pillow that has been used in Japan for a long time. It's good for your health, and is recommended for those who like a hard pillow. It's very beautiful, but please understand that it is a used item before bidding. - Material: Wood - Color: Dark Brown - Design: Curved shape with four legs - Usage: Supportive platform for posture correction Thank you for viewing.