Introduction Sleep quality has a direct impact on physical health, mental clarity, mood, and daily productivity. Yet millions of people wake up each morning with neck stiffness, shoulder pain, headaches, or fatigue—often caused by one overlooked factor: the pillow. In recent years, Derila Ergo has gained attention as an ergonomic, memory foam pillow designed to support proper spinal alignment and improve sleep comfort. This in-depth 2000-word article explores everything you need to know about De