RamHome (&trade;) White insert pillow stuffer square 18" - Superior quality polyester - Machine washable and hypoallergenic. This pillow insert it is perfect for square 16" x 16" or square 17" x 17" covers. Ultra Soft, Odorless & Machine Washable. Extremely resilient & easily refluffable. Similar weight and feel as traditional down. When inserted in the proper sham size they have this elegant fluffy and yet firm look.