The PER-FIT Adult Brief by Prevail is ideal for heavy incontinence protection and has performance and comfort enhancing features PER-FIT features Cloth-like Outer Fabric, Easy-Lock Fastener (ELF), reattaching fasteners, and Advanced Zoning System. Sizing Chart MPN Size Waist Size Absorbency Pack Quantity Case Quantity PF-512 Medium 34 to 46 Inch Waist / Hip Extra 20 80 PF-513 Large 44 to 58 Inch Waist / Hip Extra 20 80 PF-514 X-Large 58 to 68 Inch Waist / Hip Extra 20 80