Bubba Blue Breathe Easy Head Rest Relieves negative pressure to help prevent Flat Head Syndrome Our gentle contoured design gently supports Baby's head and relieves negative pressure on the skull Cradles baby's the head naturally by using soft supportive 3D mesh material and ergonomic design It's not a traditional pillow, this head rest does not lift baby's head Its contoured design gently supports baby's head and relieves negative pressure on baby's soft skull to helps prevent Flat Head Syndrome Enables baby to move their head naturally What is Flat Head Syndrome? This is a condition that causes baby's head to have a flat spot or be misshapen. This occurs when baby's head develops a flat spot due to prolonged pressure on that area. Infants are vulnerable as their skull is soft and still developing. Because babies spend so much time lying on their back, they may develop a flat spot where their head presses against the mattress.