What is the Donjoy Male Knitted Back Support? The Donjoy Male Knitted Back Support has been designed to create a distinctive multidirectional tailored fit to the male torso offering an enhanced level of support & protection. This hypoallergenic belt features four metal struts for increased stability while the support also incorporates two additional stays in the abdominal closure panel for a strengthened hold. Offering optimal lumbar stability the support belt is suitable for daily living, work-based or sporting activities to provide a truly flexible product suited to any occasion: Encourage Better Posture & Improve Spinal Alignment Support Sprains & Strains of the Lower Back Hypoallergenic, soft & supple for increased comfort What size do I need? To determine the correct size, a measurement should be taken from around the waist: Small: 70-80 cm or 27.5-31 inches Medium: 80-90 cm or 31-35 inches Large: 90-100 cm or 35-39 inches X-Large: 100-110 cm or 39-43 inches XX-Large: 110-120 cm or 43-46.5 inches XXX-Large: 120-130 cm or 47-51 inches Please Note if buying from abroad: These products are sent direct from the manufacturer & so lead times will be significantly longer than normal if you purchase this item from outside the UK