The Cork Quarter Block from Yoga-Mad is the ideal yoga prop to help support and give stability during standing poses (asanas). It can be difficult to maintain the correct form when in standing postures if the Achilles tendon or calf muscles are tight or strained but a quarter round block can help. The quarter cork block is much lighter than a traditional wooden block and will not distort under bodyweight or damage floors. Perfect for use in classes or at home. Made from high quality sustainable cork material.