58% Cooling Nylon, 42% Polyester Jacquard SEALYCOMFORT MEMORY FOAM: This king size pillow is designed with cushioning gel memory foam conforms to your head and neck, providing personalized pressure relief and a comfortable sleep experience BREATHABLE COVER MATERIAL: Made with a blend of 58% Cooling Nylon and 42% Polyester Jacquard, the cover enhances comfort and durability while maintaining flexibility DESIGNED FOR ALL SLEEP POSITIONS: The cooling pillow is ideal for most pillowcases, and designed to provide support for back, side, and stomach sleepers SURFACE-GUARD TECHNOLOGY: Antimicrobial Surface-Guard Technology kills bacteria and allergens, and the removable, machine-washable cover ensures easy cleaning 1-YEAR LIMITED WARRANTY: Rest assured with reliable comfort, this memory foam pillow is backed by Sealy’s rigorous product testing for exceptional quality and long-lasting durability