Experts recommend replacing your pillow every one to three years — but we understand that it's not always the case! If your head doesn’t feel supported, you need a new pillow. Indications could be stiff neck or tired shoulders after a night's sleep. No matter what position you lie in, the pillow should be supporting your head fully and its thickness should keep your head in a straight aligned position. For better hygiene, we do recommend to change your pillow(s) often if you are a drooler or if you sweat a lot during sleep.