These pillow inserts will fit a 14 x 14 pillow cover. The manufacturer removes air from the pillow inserts to assist in shipping. When your pillow arrives, remove it from the packaging and place it in your dryer with other clothes you're drying. Leave in the dryer for at least 15-20 minutes. When you remove your pillow insert it will be fluffed and ready for you to place inside your pillow cover.