The Onetan memory foam pillow is adjustable freely to your own sleeping habits, you can ADD or REMOVE inner foam filling to find the perfect comfort level - for side, back, stomach and pregnant sleepers. Whether you prefer soft or firm pillows, this sleeping pillow is for you.The bamboo pillow cover contains 40% Viscose Rayon and 60% Cotton. CompuClever sleeping pillow select premium shredded foam which allows air through freely, and the cooling gel particles inside will alleviate excessive heat build-up. You will feel just like sleeping on a natural soft clouds.Based on ergonomic design, the bed pillow provides the full support for head and neck. It can allow memory foam to contour more closely to your body, providing perfect support for your head, shoulder and neck. With luxury bamboo fiber, the daily pillow brings more softer, breathable, safe and skin-friendly using experience. The natural material wicks moisture away from skin, resists odor. WITHOUT any harmful substances, good resilience, not easy to deform.