Designed for chronic back pains Helps to cure numerous back complaints Supports the lower back Comes complete with an adjustable, elasticated strap. Very comfortable / Can be worn under everyday clothes It is tailer-made for those who carry or lift heavy. - back support for lifting Lumbosacral Corset is actively used for facet joint problems of the lumbago, (lumbar support), unbalanced postural muscles of the lumbar spine, ligament problems, osteokondrosis, spondiliosis, spondiliartosis and chronic back pains The Armo Line Lumbosacral Support is available in five different sizes, enabling you to choose the size that fits you perfectly. Please measure around your waist and select the appropriate size from the table below: Lumbosacral Back Support Measurements Size in Cm in Inches Small 70 - 80 cm ~27½? - 31½? Medium 80 - 90 cm ~31½? - 35½? Large 90 - 100 cm ~35½? - 39¼? X-Large 100 - 110 cm ~39¼? - 43¼? XX-Large 110 - 120 cm ~43¼? - 47¼?