Cover is 60% Polyester 40% Bamboo-Derived Rayon CertiPUR Certified foam. FULLY ADJUSTABLE PILLOW with our PROPRIETARY MIX of SHREDDED VISCO ELASTIC MEMORY FOAM - ADD or REMOVE foam to adjust to your comfort, perfect custom made pillow each time - for all sleep positions (back,side,stomach). Allows greater ventilation - Promotes proper alignment allowing deeper sleep through the night. PBDEs, TDCPP, TCEP flame retardants, mercury, lead and heavy metals, formaldehyde, phthalates regulated by the CPSC, or CFCs. Our foam has been analyzed by independent, accredited testing laboratories. WHAT IS IN YOUR PILLOW? Our pillows meet the CertiPUR-US standards for content, emissions and durability, and are analyzed by independent, accredited testing labs. allergy sufferers no longer need to compromise comfort! EASY TO CARE FOR - MACHINE WASHABLE - 5 Year Warranty - Guaranteed it will not go flat. We guarantee you'll love the pillow, and if you aren't absolutely satisfied, return it within 30 days for a refund, no questions asked.