Keep your yoga practice plastic free with our cork yoga blocks. Our yoga block is made from 100% cork and free from PVC, TPE, silicones, and phthalates. Cork is a sustainable material, cork is harvested from cork tree bark which is stripped from the tree. The bark then regenerates and can be harvested again in 9 years. Cork trees require relatively low resources to grow. Dimensions: 22.5cm 15cm 8.5