At SHEEX, we believe that the inside and outside are equally important when it comes to pillows. For this reason, we designed the ECOSHEEX® Down Alternative Side Sleeper Pillow with both a temperature-regulating cover and temperature-regulating fill for optimal thermal balance. The ECOSHEEX®Performance fabric surface is an incredibly soft sateen that absorbs moisture away from your skin to evaporate quickly, ensuring you stay dry and comfortable throughout the night. The removable zippered cover is filled with Cell Solution® CLIMA, a phase changing technology that regulates body temperature based on your surroundings, so you're never too hot or too cold. This hypoallergenic pillow has a supportive 2" gusset that evenly distributes fill for a consistent loft across the entire pillow, providing the neck and spine support you need as a side sleeper.