5-level adjustable lumbar support with breathable mesh cover. - Model Name: JRS390-BK - Size: Approximately 380 x 390 x 165mm - Weight: Approximately 1130g - Material: PP - Adjustment Range: 305-500mm - Height Adjustment Levels: 5 levels - Breathable Cover: Mesh cover - Product Specifications: Ideal for back support - Color: Black Thank you for viewing.