Flexible thermal devices comprising an elastic fabric ring having an inner fabric layer and an outer fabric layer and first terminal circumference at a first edge and a second terminal circumference at an opposite second edge, a plurality of panels defined between the inner fabric layer and the outer fabric layer creating a first panel row, and a plurality of gel cells being retained in the plurality of panels in the panel row, wherein the panels are bordered by stretch stitches joining the inner fabric layer and the outer fabric layer, and methods of treatment using the Flexible thermal devices.
