Meet one of yoga’s most multitasking props, the bolster. The Yogiraj bolster is made of organic cotton filled with organic buckwheat, that molds after your body in all positions, giving you the perfect support. Just like a true yoga friend should do. Meet one of yoga’s most multitasking props, the bolster. The Yogiraj bolster is made of organic cotton filled with organic buckwheat, that molds after your body in all positions, giving you the perfect support. Just like a true yoga friend should do. The perfect supporting props in yin- and restorative yoga and all other calmer forms of yoga. The perfect support in yin yoga and restorative.