INCREDIWEAR XXX XL Radical Pain Relief Back Brace, Therapeutic Infused Fabric, Carbon Fiber, Cotton, Nylon, Polyester & Spandex Blend, ADJUSTABLE FITS: 54-60in Waist, Circulation Enhancing, Increases Blood Flow, Reduces Pain, Swelling, Stiffness & Fatigue, Can Be Worn 24/7, Inside Material= 30% Nylon, 30% Polyester, 20% Spandex & 20% Cotton Germanium & Carbon Infused. ACCELERATED RECOVERY For Joint Pain, Sports Injuries, Sprains, Arthritus, Tendonitis, Tired & Aching Muscles. SIZING IS BASED ON STANDARD WAIST SIZE