The amazing folks at The Beam sent me their product for trial and I lOVE it. It has many of the same benefits of a bolster however this can be used against the wall and on the floor and it's light weight for easy storage.
Some of the benefits to using the beam are to: reduce back pain, stretch the neck, spine and hips, open the lungs and calm the nervous system. You can also use it to increase balance while you challenge your core.
To see for yourself check out https://nimbleback.com for videos on how to use and order The Beam