CUSTOMIZE THE THICKNESS OF THE PILLOW: add or remove shredded memory foam to fluff up or thin out the pillow according to the firmness or height desired for a personalize comfort STAY COOL ALL NIGHT: not only the bamboo (35%) and polyester (65%) cover is breathable, but also the shredded memory foam pieces create many air pockets to keep you sweat-free & fresh while you sleep FOR ALL SLEEPERS: side sleepers, back sleepers and stomach sleepers can benefit from the ergonomics of this customizable bed pillow; the pillow will help reduce neck pain while ensuring maximum comfort PREMIUM BED PILLOW: the outer bamboo cover is breathable, anti-bacterial, hypoallergenic, odor-free, and machine washable in cold water; the memory foam filling is CertiPUR-US certified for its quality COTTON POUCH FOR THE FILLING: the shredded filling that you don’t need can be conveniently kept inside a 100% cotton pouch (included) so you could save it to use it whenever you need it