Tired of waking up from the heat? Fall asleep and stay asleep with the Cool Rest cooling pillow. What makes this pillow so unique is that it utilizes 'Phase Change Material' (PCM) technology and prints it onto the cotton fabric. The PCM works by cooling you off when you begin to warm up and by keeping you regulated when you get cold. The 2 gusset allows for the fill to fully fluff and provides support to your head and neck.