This Thermoskin Thermal Lumbar Support has been specially designed to provide exceptional pain relief and compression for muscle injuries and general lower back dysfunctions; injuries to the lumbar discs and the sacroilliac joint.Fitted with two flexible internal stays provide additional support and will not restrict natural movement. To ensure a perfect comfortable fit the Thermoskin Thermal Lumbar Support is supplied with adjustable elastic straps on the sides, these straps also allow for a variable compression dependant on the users requirements. This is the medium sized Thermoskin Thermal Lumbar Support designed to fit a waist of 81cms - 90cms (32\" - 35.5\"); two other sizes are also available in this section of the website.