5S Slow Rebound Memory Foam Pillow: Neck pillow shapes automatically when firmly being pressed and will rebound within 5S when no press, non-deformation all the year. Lying on the bed pillow feels like floating on water or clouds, no pressure on the skin. With slow rebound design, the neck support pillow does NOT compress auricle like other common pillows | Washable Pillowcase & Breathable Pillow: This pillow for sleeping comes with soft pillowcase, which is made of soft comfortable fabric and mesh sides, removable and machine-washed. Besides, the contour neck pillow features excellent moisture absorption performance and breathability, remaining consistent firmness all the year | 2 Available Heights for Any Sleep Style: The standard dimensions are 23.6 x 13.8 x 5.3/3.7 inches ( L x W x H) , with slight variations of 0.5 inch due to manual measurement. There are two available neck support heights to support your neck and head. The ergonomic and supportive pillow for neck pain is designed for multiple sleeping positions, such as side sleeping, supine, stomach sleeping, back sleeping and low pillow sleepers etc. | Pillow to Relieve Neck Pain: The contour pillow fits automatically according to the body curve to relieve and release muscles and physical and mental pressure. With personalized customized shape, the cervical pillow fits the contours of your head, neck and shoulders as well, which greatly relieves pain and reduces shoulder pressure to achieve a healthy sleep, waking up in the morning without pain | Tips: Memory foam pillows will have a very slight smell after being transported in a high-temperature and airtight environment. This is a normal phenomenon. After receiving it, please store in a cool and ventilated place for 3-5 days. Please note that comfort varies by individual and may be affected by factors like body shape, sleep position, and neck curve. Polovo pillows are not for medical use. If you have sleep disorders, please consult your doctor, And if for any reason you 're not satisfied with our pillow, please feel free to contact us. We strive for the quality of our products and promise top-quality products and customer service.