Lightweight, firm and velvety soft to the touch, the 9-inch round air CORE yoga bolster is a comfortable choice for yoga practitioners of all skill levels. The bolster is made using air CORE technology, which provides a proprietary core of air-filled pockets made from post-consumer recycled plastic and 100-percent cotton. The technology helps prevent sagging or flattening so the bolster will retain its shape and firmness. In addition, air CORE reduces the bolster weight by 30 percent compared to other bolsters, making it easy to handle. And the bolster is a breeze to clean thanks to the removable eQua microfiber cover, which is machine-washable. The cover even includes a unique zipper configuration with reinforced ends to ensure safe removal. Also equipped with a durable side strap for carrying, the bolster measures 29 Inch long by 9 Inch in diameter and weighs 4.5 pounds.