Neck pillows are specially designed cushions that provide support to the neck and head, often used during travel or while resting. They come in various shapes, with the most common being a U-shape that wraps around the neck. This design helps maintain proper alignment of the spine and reduces discomfort during long periods of sitting. These pillows are typically made from materials like memory foam, polyester, or inflatable options, allowing for different levels of firmness and comfort. Many people use neck pillows on airplanes, in cars, or at home to enhance relaxation and prevent stiffness, making them a popular accessory for travelers and those seeking comfort.