Features: This multiple hole back trainer is designed to improve postures, reduce back pressure, and help you achieve a more uprights stance. Features multiple adjustable hole, this back trainer accommodates users of varying height and is craft from comfortable, nonslip materials for safe and secure use. Great for office workers, students, drivers, and anyone needing to enhances their postures and alleviate back fatigue. Perfect for use in offices, homes, or any setting where you can benefits from improved sitting postures and relief from back discomfort. Easy to use and practical, this back trainer allows you to incorporate effective back exercises into your daily routine effortlessly. Specifications: Materials: Iron Color: As The Picture Shows Package Weight: approx.800g Size: approx.38x11x14cm/14.96x4.33x5.51in Package Includes: 1Pc Back Trainer note: Please allow 1-2cm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!