Authentic BKT posture correction seat cushions, one grey + one black, sold as a set. Ergonomic design provides wrapped support for your lumbar and sacrum. Great for office work, relaxing at home or car rides. Thick padded surface with sturdy hard frame to prevent slouching. I don't get alerts from this mini-program instantly. For a faster response, feel free to reach out on WeChat (13186570896). Not always online here—thanks for your patience. Gift from friend, used for 2 months. No longer needed after I got a new chair during relocation. Actual photos shown, normal signs of wear, comes with original storage bag. Original price ¥400 for both. Now ¥99 for the set with free shipping. ¥10 discount for self-pickup near Shanghai Railway Station.