I have a herniation in the cervical area -- I think it's C3-4. Once in awhile it acts up, and really HURTS. So I put the soft collar on, and it really helps to settle the darn thing down. Within a couple of hours, it has stopped hurting altogether!!! So I find it really invaluable!
You don't want to wear a collar constantly tho. I weakens the neck muscles and can cause atrophy. So a couple of hours on and a couple off, and back on and off again, etc.
Best of luck. Hugs, Lee