The practical benefits of the 18 x 18 inch pillow covers, sold in sets of 2, include their versatility for use on sofas, beds, in homes, and offices. The size is ideal for various furniture pieces, providing both decorative and functional purposes. Users can easily update the look of their living spaces with these covers, adding comfort and style. The set of 2 allows for mixing and matching, creating a cohesive design aesthetic. Overall, these pillow covers offer convenience, affordability, and the ability to enhance the comfort and appearance of any room.