Supta Virasana can be made much more comfortable, and effective, if a few details are observed.
Before setting up the props there are several important landmarks to locate.
1. T12 which is located at the junction between the lumbar and the thoracic spine.
2. T7 located at mid thoracic spine at the bottom of the shoulder blades.
1. The edge of the first support is at T12.
2. The edge of the second support is at T7
The space between T12 and T7 is about the distance of the gently spread hand.
Supta Baddha Konasana (reclining bound angle)
Legs straight or bent
In most cases, people requiring Restorative Yoga will not be comfortable with the knees bent so the pose is done with straight legs.