PROFLEX 1100SF STANDARD BACK SUPPORT X-LARGE BLACK ERGODYNE EXTRA LARGE (38""- 42"") PROFLEX 1100SF STANDARD BACK SUPPORT. PATENTED NON-CONDUCTIVE STICKY FINGERS STAYS. INNOVATIVE POWER PANEL POSITIONERS. DURABLE 280D SPANDEX BODY MATERIAL. ADJUSTABLE DETACHABLE SUSPENDERS. STRETCHABLE BIAS BINDING WITH ZIG-ZAG STITCHING. BLACK COLOR.