1.[Patented Ergonomic Neck Pillow]Our neck pillow is made from high-quality CertiPUR-US and Oeko-Tex certified rebound memory foam, featuring a unique natural molding foam design. The unique butterfly shape of this neck pillow combines with a traditional bed pillow for a softer and more comfortable way to soothe the fatigue of a full day's work or study. It can also be used for long term use to help relieve neck pain.The contour design keeps your neck at the appropriate height and the central cavity properly supports the head and promotes alignment of the head with the body and spine. Choose the contour pillow and experience restful sleep! 2.[4 Height Options and Adjustable Design]Our cervical pillow four different heights on two sides (with removable foam piece) for you to choose from. Length: 23.6", Width: 15", Four Heights: 5.3"-4.5"-4.1"-3.3". The foam piece(0.8in) is mounted on the back of the pillow and can be seen by unzipping the zipper. If you like a high pillow, keep it inside. Or a low pillow, pull out it and adjust the height you want. This orthopedic pillow is suitable for various sleeping positions including stomach, back, and side sleeping. After many tests, back sleeping is the , lying on the pillow feels like floating on water or clouds, wrapped in comfort, effectively prolonging your deep sleep. 3.[Slow-Rebound High-Quality Memory Foam]This CertiPUR-US professionally certified premium slow-rebound memory foam has a nice resilience that provides gentle support for shoulders and neck, balancing softness and support, and it maximizes the relaxation of your head, neck, shoulder and back muscles for comfort whether you are sleeping on your back or side. 4.[Breathable & Odorless & Removable Pillowcase]Side sleeper pillow is made of double-layer high-quality pillowcase with soft texture, which can be ly stretched with the pillowcase. The pillowcase is removable with zipper and machine washable. Made of cotton and polyester, the pillowcase fits perfectly to your skin, and its odorless, soft, breathable fabric reduces heat to keep you fresh at night. -Provides a dry and crisp sleep environment for the comfortable sleep you've always wanted! 5.[Sleep Savior That Really Helps]Choosing a good cervical pillow may surprisingly enhance your sleep quality. If you are looking for a more fitting and softer pillow, we invite you to try ours. Note: The pillow is not intended for medical use. If you have sleep disorders, please consult your doctor.