[Sustainable and durable 100% cork yoga block] TRNR cork blocks are a blend of sustainability and yoga performance. Made from eco-friendly cork, this block provides a solid and stable foundation for optimal alignment and balance during practice. The high-density construction ensures durability and can be used in three different three-sided heights to suit your specific needs, such as difficult poses or deep stretches. In addition to its excellent performance, cork promotes both environmental protection and personal health as a renewable resource. Lightweight yet sturdy, it naturally resists microbes and germs, making it easy to maintain and effortlessly hygienic.