These pillow covers fit a 18-20 inch pillow insert. They are a very soft wide corduroy in 4 different shades of blue. But the colors of the pillow covers definitely do not match the blues in the picture in the description. The pillows in the picture are more shades of turquoise and teal. The ones I got were navy and shades of blue/gray (very muted) They still work for me as I have several shades of blue in the room. Even though they zip off easily and wash beautifully, I can't give more than 3 stars when the picture shows them completely different.