FAIRFIELD Crafter’s Choice® rectangular inserts are designed for DIY pillow covers, embroidery panels, and needlework fronts that need structure. This 12 x 16 in (30.5 x 40.6 cm) insert is a versatile lumbar size for chairs, benches, and layered bed styling without taking up much space. If you want a softer or firmer feel, adjust through the zipper, then spot clean and fully dry the insert before putting it back into a cover.