1.This Pilates spinal straightening device can help you relieve back pain and improve your posture. The product is made of high-density EPP engineering plastic, which is lightweight, odorless and durable, providing safe and reliable support for your daily training. 2. The split design supports flexible use. The main arc-shaped part can be used alone or combined with the extension section of the headrest to adapt to different stretching and training postures. The ergonomic arc-shaped structure can gently stretch the spine and open the chest and shoulders, helping to correct poor posture caused by prolonged sitting and hunchback. It is applicable to Pilates, yoga, physical therapy and core training scenarios, helping users of different levels improve flexibility, strengthen back muscles and relieve physical discomfort. 3. This spinal aligner is lightweight and portable, making it suitable for use in home gyms, during trips or in studios. The sturdy and durable structure ensures long-term stable performance and is a practical supplementary item on your fitness equipment list.