If you're still struggling to find the right pillow height, our cervical pillows offer 2 different heights on each side to choose from, allowing you to select the perfect pillow for your sleeping position. Specific grooves are designed to let your arms sleep comfortably underneath. This pillow is suitable for all sleeping positions, including stomach, back, and side sleepers. The butterfly pillow has been meticulously designed with six unique areas specifically engineered to contour to your body's natural curves. Combining the benefits of traditional pillows, the inclined 15-degree hollow surface smartly supports your head while maintaining your neck's natural curve, perfectly aligning your spine. Wake up feeling refreshed! The neck support pillow is crafted from high-quality, CertiPUR-US certified rebound memory foam. Premium quality, firm yet not too soft for maximum comfort and excellent relaxation of your head, neck, shoulder, and back muscles when lying on your back or side. The side pillow features a double-layer, high-quality pillowcase that is soft and stretches and contracts well with the pillow core. It's removable, zippered, and machine washable. The pillowcase is made of cotton and polyester, fitting perfectly against your skin.