Flat blocks enhance your practice by supporting, stabilizing and aligning the body. Sit on a single block for a straighter spine, or put two or four together to form a shoulder stand platform.. Features-. Classic Iyengar Yoga prop. Sustainable, fine grain cork material. Rounded edges and corners for easy grip. Large non-slip surface. Made in Europe. Size Dimensions - 30cm x 20cm x 5cm. Use and care-. To clean:. Wipe clean with a damp cloth and let fully dry. If needed, add some mild organic detergent to the cleaning cloth.