Peace Yoga Zafu Meditation Yoga Cotton Cylinder Bolster Pillow Cushion - Choose your Color Size: 20" x 10" Quantity: 1 Black Pillow Get a boost up from hard floors, relieve stress on joints, and properly support your spine with Peace Yoga Meditation Bolsters Full zip cotton cover is removable and machine-washable EXTERIOR: Cotton cover. INTERIOR: Premium polyester filling sealed in a pouch for easy removal and insertion. The polyester filling provides the right balance of firmness and pliability to ensure your comfort during meditation.