This is the perfect insert! The size fits perfect 20x20 and feels luxurious and "smooshy"! They stay were you place them and you can karate chop the middle and it maintains perfect shape. I used these in pillow covers from Wayfair (Pillow Cover (Set of 2) by O-home) and they look and feel expensive. Unfortunately they only sent me one of the 2 that are supposed to come with this order, so my guests were gone by the time I received them.