Gel Memory FoamHealthy & Skin-friendly–The king size pillows are filled with gel memory foams. The pillowcase is made with fabric bamboo and polyester fiber that keeps your head cool and enjoying deep sleeping.Adjustable Loft–The memory foam pillow contains up to 25% more foams and just remove some of them to adjust the height according your need. And so it is effective for neck pain relief and suit for all sleepers such as side sleepers, Back sleepers and Stomach Sleepers.Moderate Neck Support–The soft pillow is moderately heavy and well constructed with moderate neck support. After adjusting it to the proper height, It keeps loose and fluffy not flat for a long time and refresh by tapping it slightly.Removable and washable–The pillowcase can be removed off and cleaned by hand or machine. If you smell the original smell of a new foam, it is harmless. Please put it in the air for one or two days and the smell will soon disappear.After-sales–Provide worry-free after-sales service for 3 years. If you have any questions, please feel free to contact us, we will be online 24hours/7days.