@testa1425: Do you always wake up with a sore and stiff neck every single morning? Lots of people choose to use two pillows to fill the empty gap under their neck. If you also have this trouble, try this butterfly pillow. It can nicely fit your shoulder and neck curve no matter you sleep on your back or sleep on your side. #b2b #goodthing #coolingsleep #pillow #pillowrecommendation