Made of sustainable cork, this high quality lean yoga block has a firmness not found in foam blocks, and allows you to feel secure in the support it generously provides.. Weight & Size Dimensions - 0.3 kg; 22 cm x 11 cm x 7 cm. • Sustainable, fine-grain cork material.. • Weighs less than coarse-grain cork commonly used for blocks.. • Resilient solid structure.. • Easy-to-grip textured surface.. • Comfortable contoured edges.. Info & Care -. To Clean: Wipe clean with a damp cloth. If needed, use an organic cleaning solution with no harsh chemicals.. Sustainability -. Cork is a renewable, sustainable material, which comes from the bark of a Cork Oak Tree. There are no toxic chemicals used in the manufacturing of our cork yoga blocks.