Everything Yoga 4" Cork Yoga Blocks These yoga blocks are made from eco-friendly cork and are a great prop to provide to clients in any yoga class. These blocks are strong enough to support any Yogi's full weight, and are comfortable enough for use under the head or used as a seat. Cork yoga blocks provide support and stability for proper alignment in class, allowing your clients to practice postures safely and effectively. These Cork Yoga Blocks come in two different sizes, 3" x 6" x 9" & 4" x 6" x 9", and we guarantee these blocks will never get mushy, no matter how often they are used! Each Yoga Block comes individually wrapped, and can easily be resold in boutiques and Yoga Gift Shops.