Portable Cork Yoga Block | 2-PackMade of sustainable cork, this high quality cork yoga block has a firmness not found in foam blocks and allows you to feel secure in the support it provides. Easy to grip textured surface is great for beginner to advanced yogis. Improve your practice by using blocks to maintain proper alignment, deepen your stretches, and stay safe by reducing injury and muscle strain. Perfect for restorative yoga classes, Pilates, meditation, fitness, and exercise