A V-shaped pillow is a type of body pillow that is designed to support the head, neck, and shoulders while sleeping or resting. It is also known as a memory foam pillow, which is a type of foam that conforms to the shape of the body for maximum comfort and support. V-shaped pillows are often used by side sleepers, as they help to align the head and neck in a natural position, reducing the risk of discomfort or pain. They can also be used by back sleepers to provide additional support to the shoulders and neck.