Our high quality yoga block supports your practice to extend, provide stability, deepen asanas, and enhance alignment. It is made from renewable, sustainable material, which comes from the bark of Cork Oak Tree and fully biodegradable so they are good for you and the environment. Specs: made of 100% sustainable cork Dimensions: 3" x 6" x 9" Product Care: Wipe clean with a damp cloth or spray lightly with our own Breathe and Calm mat spray.