Core Products Tri-Core Cervical Support Pillow. Tri-Core Cervical Support PIllow helps provide proper alignment of the spine. Two different width neck rolls on top and bottom provide a custom fit for different sized sleepers. The trapezoid-shaped center delivers great orthopedic benefits for back sleeping by cradling the head and allowing the built-in neck roll to firmly support the neck. The comfortable, but firm, side lobes support the head in a natural position when side sleeping.