A single piece, natural, lightweight, safe alternative to the traditional wooden brick or foam yoga brick. High density cork construction, with chamfered edges. Will not 'give' under weight or pressure. Great for providing extra support, lift or grounding in numerous standing and seated postures. Has three distinctly different dimensions to vary support height, offering stable support in all planes. We recommend that you take guidance from your Yoga Teacher on how exactly to use this prop in a way that is appropriate to your particular yoga practice.