8shape design with double Y wrapping and a singlepiece mold provides balanced support and lets you tighten both sides at the same time for a secure fit. A flexible plastic support plate follows the movement of your back and can bend 360 degrees. This adapts to your posture, relieves tension, protects the spine, and helps correct posture habits over time. Ergonomic design for a better back fit. Helps prevent and relieve back pain, opens the shoulders to straighten the spine, stretches and expands the chest, and reduces hunching. Materials and construction: Velcro fastening with an elastic polyester interlayer and a polyethylene interlayer for durable, breathable support. Key benefits and features Posture correction: aligns the spine, opens the chest, and reduces slouching. Pain relief: supports the back to reduce strain during prolonged sitting or standing. Full range of motion: 360degree flexible support plate moves with your back. Adjustable fit: double Y straps tighten on both sides for balanced compression. Durable construction: Velcro closure and layered materials designed for daily use. Specifications at a glance Ergonomic back design for improved fit and posture support Stabilizing plastic plate with fullrange flexibility Materials: Velcro fasteners; elastic polyester interlayer; polyethylene interlayer Use scenarios At work or study desks: wear during long computer sessions to maintain upright posture and reduce muscle fatigue. During travel or commuting: use to support the spine and prevent slouching on long drives or flights. Postexercise or daily routine: wear after workouts or throughout the day to reinforce good posture habits and promote chest expansion. Note: This description preserves the original product's design intent and functional features, including the 8shape double Y design, 360degree flexible support plate, ergonomic focus, and material composition.