Harbinger 4-Inch Nylon Weightlifting Belt Extra wide 3 inch support strap provides maximum lower back and abdominal support for heavier lifts. Parallel lines of 346 count nylon stitching run the entire belt length to support and stabilize the belt body for uniform support. Heavy gauge steel rollerbuckle makes tensioning simple and easy. Thick, flexible heavy duty nylon web provides maximum comfort and durability while maintaining muscle warmth.