HIPPIH 4 Pack Pillow Insert - 13 x 13 Inch Hypoallergenic Decorative Square Sofa and Bed Pillow Form Inserts 4 Pack Pillow inserts decorative square pillows measuring 14" * 14" and 16" * 16 " ,Measure from one side to the other horizontal by tape Made of thicken polyester non-woven and highly durable 3D PP cotton Can suits any elegant pillow cases to active your room,particularly perfect for your 16" * 16" pillow cover Vacuum packing for easy shipping.After receiving these pillow inserts, you need to let them naturally recover for a few days, or exposure in the sun for one day, and then they would restore fluffy Kindly Remind: This insert is recommended for 16" x 16" sham covers. It would provide a plump and full pillow from corner to corner.If your pillow cover is 18" x 18" we recommend 20" x 20" inserts. If your pillow cover is 20" x 20" we recommend 24" x 24" inserts