Amazon choice item I was looking for one and this went on sale.
seems pretty good.
Neck Stretcher
-Relief neck pain in just 10 minutes
-A perfect traction pillow for neck curve corrector
-Simulating finger massage and stretching
-Safe stretch step by step
25% Price Off Techshining Migraine Relief Gel Hat $21.74 (Was $28.99)
(OP has sockpuppeted for this store)
Be careful to not fall asleep on it. At one time, I felt asleep, probably over 20 mins and my head is missing blood ! I can feel the blood flowing through my head again when I took the thing off.