The Serta PerfectSleeper Cool Knit pillow has a soft & breathable, cooling design. Available in both Standard/Queen and King sizes.  Features: Cooling Sleeping Position: Multi-Position Fill Weight: 28 oz. of Fill Pillow Size: King Measurements: 20 Length/Inches, 36 Width/Inches Base Material: 50% Nylon, 50% Polyester Filling Content: 100% Polyester Comfort Type: Soft/Medium Density Care: Machine Wash Material: Circular Knit Pillow Type: Bed Pillows Country of Origin: Imported