McDavid Classic Logo 491 CL Level 1 Waist Trimmer - Black - One Size Adjustable Hook And Loop Closures For Custom Fit And Comfort. Non-Slip Neoprene Inner Layer Maintains Positioning Helps Relieve Minor Back Pain And/or May Enhance Weight Loss Efforts Via Therapeutic Heat Cushions, Compresses, And Supports Lower Back And Abdominal Muscles