Yoga cushions take a special part among all things that I create since they help execute many asanas deeper and get stretching not due to strengthening yourself but due to natural release of the body muscles. Every person and every body is unique, that is why yoga cushions help to do many positions right and within your body limits. Some styles of yoga are almost impossible to imagine without yoga cushions, for example yin yoga.
I fill yoga cushions with buckwheat or spelt. This stuffing makes the yoga cushion tough, and at the same time they get the body shape easily and almost each asana is easy to execute.
Online-Shop with more detailed information and the whole choice you can find under this link.