Say goodbye to restless nights! The Aero Fit side sleeper pillow combines pressure reliving support with the ultimate in temperature regulating technologies for a cooler night's sleep. Featuring breathable, cool-to-the-touch Aero Fit performance fabric and temperature-regulating Cell Solution® CLIMA down-alternative fill in the removable outer cover. The fill is hypoallergenic and distributed to provide consistent loft for neck support and better spine alignment.