The microfiber pillow is your ally for a good night's sleep. Its 2'' strip allows perfect alignment between your head and your back. In addition, this allows the interior filling to be distributed evenly. Speaking of fill, it is microfiber and offers the same feeling as down! No risk of bunch formation. Microfiber is a very airy and soft fiber which gives the microfiber pillow unparalleled comfort and serenity. If the pillow seems to have lost a little volume, shake it! Finally, add to that a 100% cotton shell, enough to sleep on these 2 pillows every night, for life!