Used from the newborn period up to around 4 months. I am selling it because my baby has outgrown it. Using this, the flat spot on the back of the head improved considerably, and I received compliments on the shape of my baby's head. The cover has been washed several times, so it shows some signs of use, but it's not worn out and I think it can still be used◎! Cover color: Greige Sand I will wash both the cover and the pillow with Arau Baby detergent before shipping.