Cool and Soft Pillowcase: The cool ice silk pillowcase is made of breathable fiber fabric that fits perfectly against our skin, allowing you to be cool and comfortable and less stuffy so you can fall asleep faster and deeper. Removable and washable cover Improve Sleep Quality: SAHEYER neck pillow is made of high-quality memory foam and proven design perfectly supports and aligns your head, neck, shoulder, and back. 2-in-1 Cervical Pillow: Our cervical pillow measures 23.7 x 14 x 5 / 3.9 inches (L x H x W). It features two neck support levels to naturally align your neck, allowing for a comfortable and restful sleep Ergonomic Design: The ergonomically shaped neck exterior and central cavity. The pillow also features a special armrest, providing full support to your shoulders and arms Premium Safety Memory Foam: The neck pillow is made of high quality CertiPUR-US & Oeko-Tex certified rebound memory foam that meets strict safety and quality standards. 5s rebound memory foam will "remember" the curve of your neck and adapt to your shape Breathable and Washable Pillowcase: The cervical pillow’s cervical spine cover is made of ultra-comfortable, breathable fabric with mesh sides to maintain an ideal temperature and extend the memory foam core's life. Removable and machine washable cover Warm Tips: If you‘ve never used a pillow like this before, you may experience some discomfort during the first two weeks as your body tries to adjust to the correct position.