80% Shredded Memory Foam and 20% Polyester Fiber?? ADJUSTING COMFORT ???? Our pillow features shredded memory foam filling and equipped with a zippered removable cover so that you add or remove filling to adjust its thickness and comfort your sleeping position. It is also perfect for all sleepers including stomach, side and back sleepers,enjoy a personalized sleep experience.?? REFRESHING& BREATHABLE ????This pillow cover is made of 60% polyester and 40% bamboo derived rayon, along with our super soft and fluffy foam, which allows warm air to escape while being replaced with fresh, cool air to help you have a sound sleep.?? VISCO-ELASTIC &FIRM ????Shredded style combines visco-elastic memory foam so that it can hold its shape unlike down filled pillow. Our pillow is easily adjusted to each sleep position and conforms to your neck and head for proper orthopedic support.?? HEALTHY AND SAFE ????Hypoallergenic ,deluxe quality shredded memory foam will not become lumpy or go flat. you can maneuver & mold your pillow so that it is comfortable for back stomach & side sleepers. promotes proper back, neck & spine alignment. help back & neck pain, tossing & turning, insomnia, migraines, snoring and orthopedic problems?? MACHINE WASHABLE ???? Both Cover and pillow are machine washable so that they can always keep clean. We guarantee one year warranty for your pillow to protect against defects., and if you aren’t absolutely satisfied, return it within 100 days for a refund, without questions asked.