Tri-Core Water Pillow Adjustable Cervical Support Pillow
[This review was collected as part of a promotion.] I have used the pillow for a few nights with varying amounts of water. I started with Med water fill line, increased to Firm line, and then added enough to fill the pillow half way. I sleep on a firm memory form mattress so generally I need a slightly higher pillow. The Med was not nearly enough water as the weight of my head pushed the water to the sides of the pillow leaving little noticeable support. The firm was slightly better, but the same issue existed. When I added more than the recommended amount I felt more support, but was not 100% confident. This pillow was comfortable for back sleeping, but was not enough support for side sleeping. I have slept on a non cervical support water pillow in the past and felt that I had better support with my movements. The construction of the bladder was strong and secure. I had no concerns that it may leak. For someone who sleeps exclusively on their back this may be a great solution to finding that very unique height needed.