Hard pillow, hurts the neck, & doesn't work as well as BioMat
I think that the covering it came in is made well, & I can see the crystals inside... but the pillow itself hurts my neck after just a few minutes of use, & it doesn't work as well (eg: supply the correct energy & healing) as does the original: BioMat - which is pretty expensive, but would be worth the extra money had I not bought this instead. Dang.
Rating: 3 stars