SABONA OF LONDON BACK SUPPORT.  BLACK.  SIZE SMALL23 TO 29 INCHES SZE MEDIUM 30 TO 36 INCHES SIZE LARGE. 37 TO 43 INCHES.  SIZE XL 44 TO 52 INCHES The Sabona Back Support Garment is a double action belt - two belts in one. The first belt gives support and has a Velcro fastening to ensure the belt is a comfortable fit, whilst the second belt can be tightened, according to the wearers needs, to give extra support. The ribs woven into the back panel give additional support and strength to the back area, encouraging correct posture. Finally, The TCi will keep the injured area warm, speeding up the recovery process. As the wearer gains strength in the afflicted area, the belt can be gradually loosened.