- Filling: Polyester fill provides better support and stability, ensuring a more comfortable experience. Designed to support your head, neck, shoulders, and back. - Cover: Cotton cover is breathable, helping to keep the interior dry and comfortable. This helps alleviate fatigue and discomfort from maintaining the same posture for long periods, allowing a relaxing and comfortable experience. - Styles and sizes: Price includes 2 pillow inserts, 18x18 inches, square. In addition, pillow inserts are available in a variety of styles and sizes. These inserts can be flexibly paired with furniture such as sofas, chairs, and beds, enhancing the comfort and elegance of your home. - Vacuum packaging: Pillow inserts are vacuum packed during shipping. After opening the package, gently tap the product and allow several hours for it to regain its original shape and to remove any odor. - Customer note: If your sham cover is 16x16 inches, we recommend 18x18 pillow inserts.