QUALITY MEMORY FOAM: Gel-infused ventilated cooling memory foam pillow with removable and washable bamboo cover. This type of memory foam technology allows for a much more sensual and personal night of sleep. It allows users to sleep for a prolonged period of time and not have to worry about aches and pains. The memory foam provides support for the neck, shoulders, back, and head. PERSONALIZE TO YOUR SLEEP POSITION: Memory foam can move along your turnover and retain its firmness all the time. The 3-5 seconds slow rebound memory foam keeps the shape and long-term use of the pillow. Your head will not sink too much, thus supporting your head. Best pillow for a side sleeper. Whether you're looking for pillows for side sleepers, stomach or back sleepers, this pillow can be able to make sure your pillow is "just right." REST ASSURED, WE ARE CERTIFIED: Our memory foam is CertiPUR-US, the highest standard of memory foam in the US, and is certified to be low VOC and free of many harmful substances. We don’t use low-quality memory foam gel like other pillows, only purpose-built CertiPUR-US memory foam.