Fits Waist 28-50 In, 71-127cm. Lumbar Pad For Concentrated Support. Lower Back Sprains, Strains & Muscle Spasms. This Premium Back Brace Helps Relieve Lower Back Pain from Strains, Sprains and Muscle Spasms. Double Layer Design Allows For Custom Fit and Adjustable Compression to Abdomen and Lower Back. Helps Provide Relief from Injuries and Strenuous Activity to Keep You Active. Breathable Fabric For Comfortable All-Day Wear. A: Removable Lumbar Pad Cushions and Compresses The Lower Back For Concentrated Support; B: Four Flexible Steel Springs Conform to Your Back and Provide Firm Lumbar Support; C: Tapered Cut Provides A Comfortable Fit For Men and Women; D: Outer Elastic Straps Allow For Firm Adjustable Tension; E: Main Elastic Band Widens In The Back For Broad Support and Coverage.