The Back brace contains 4 Memory-aluminum stays that are quadruple harder than the commonly used PP strips, and 2 steel springs placed along the waist side, offer 360° stronger vertical support to lower back, prevent excessive rolling of your muscles and decrease the pressure on your discs. The back support made of 4-way stretch elastic material, 3D knitting technology by different compression levels, for superior fit, breath and comfort. The inner layer is made of velvet fabric, giving an ultimate baby-skin-like silky touch, perfect for dressing internally. Back support with 2 elastic straps are designed to add extra compression around lower back to prevent back injuries from weight lifting, long time standing or sitting, doing housework, working, etc. 2 Silicone anti-skid bands are designed on the 2 sides of the waist, prevent the waist support belt from rolling up when sitting, bending or doing other activities.