The ultimate cooling pillow, the REM-Fit 500 creates superior temperature regulation while you sleep. The cooling gel insert regulates excess body heat while the Re-Ax Technology cover on the pillows wicks away moisture, regulating body temperature for maximum cooling effects.Superior cool gel technology creates a luxurious and refreshing sleeping surface, designed to actively dissipate heat and maintain an optimal temperature throughout the night. This advanced innovation not only helps keep you cool but also enhances comfort and relaxation, promoting deeper, more restful sleep.Adaptive memory foam comfort in this ultimate cooling gel pillow provides superior support for the neck and spine. This support enables you to maintain the correct spinal alignment while alleviating pressure on sore or aching joints for a more restful night's sleep.