what is a bolster pillow

A bolster pillow is a long, cylindrical-shaped pillow filled with firm materials like memory foam. It is used to provide support and comfort in various ways, such as improving sleep, relaxation, or yoga poses. The cylindrical design makes it ideal for propping up limbs, relieving stress on joints, and supporting the back and lower body. It can also be used for decorative purposes and to provide additional support while sleeping