Provides Stability, Support/Height needed to do poses safely and effectively * 9"x 6"x 4" Extra wide, High Density for strength and stability * Beveled edges, Light Weight, Easy to Carry, fits easily in our Aurorae Yoga Sak * Eco Safe Eva foam, Durable and Easy Care/ SGS approvedAurorae - Eva Foam Yoga Block, 4-inch Extra Wide, Eco-safe and Biodegradable. * PROMOTION!!! Buy 2 Aurorae Yoga Blocks for only $19.95