This is the B-AIR® PRO PLUS Suwari-na (cushion for chairs). Are you experiencing problems from sitting for long periods? Why not try this cushion, designed by an occupational therapist? Purchased for the regular price of 11,000 yen, it has only been used for test sittings twice. It is practically unused, but please refrain from purchasing if you are overly concerned about condition. Also, the instruction manual has a crease. Please be aware of this. The following is the product description: Developed with 200 therapists' salons nationwide. Stress-free with the ideal working posture! Uses Breathair material, also used in some seats on the Shinkansen (bullet train). Ideal for long hours of use. Gently disperses stress on the buttocks. Just place it on your current chair and experience a seating comfort comparable to a high-end chair! The "B-AIR® PRO Suwari-na," the ideal office chair cushion, was created by ASAO, a long-established bedding manufacturer, and Canvas, a pioneer in the therapy world, with physical therapists and occupational therapists who repeated prototypes and tests. ▼ Suwari-na Usage Explanation Video https://youtu.be/DT9QGoPWCSc Chair cushion Lower back pain Stiff shoulders Long hours of driving