Enhance your practise with this perfect Bolster. The Rectangular air CORE Bolster features a lighter weight form, firm cushion, & a machine washable microfiber cover that is velvety soft to the touch. Using air CORE technology (a proprietary core of air-filled pockets constructed from post-consumer recycled plastic & 100% cotton), the bolster weighs significantly less than standard bolsters & retains shape & firmness. The proprietary core of air-filled pockets is constructed from post-consumer recycled plastic, conserving cotton batting & reducing total weight. Why the Fushi Expert panel like it Retains shape yet light weight