Extra wide 3 inch support strap provides maximum lower back and abdominal support for heavier lifts. * Heavy gauge steel roller buckle makes tensioning simple and easy. * Thick, flexible ultra-light closed cell foam provides maximum comfort and maintains muscle warmth. * Plush Tricot Lining is comfortable against the skin. * Durable exterior comes from flame laminating abrasion resistant fabric directly to foam core to prevent fraying and pilling.