Stay more comfortable at night with Iso-Cool Bed Pillow by Isotonic. This 300-thread count polyester-filled pillow features Outlast® Adaptive Comfort® material which self-adjusts to the body's changing temperature. Available in traditional and side sleeper shapes, the side sleeper pillow features a 3 in gusset to better support the head and neck. 3 in gusset 5-year warranty Imported Material & Care Cover: cotton; Fill: polyester Machine washable