Can you name a practice that is thousands of years old, speaks to rejuvenation, and results in both strength and suppleness? Yes, yoga fits the bill, but cork production might be an even better response. Harvested without harming trees, this sustainable wood is the ideal replacement to environmentally harmful foam on other blocks and the key (ONLY?) ingredient in our Cork Yoga Block. If you are asking how you can find a block that is durable enough to withstand your bodyweight during bridge pose but with just enough give to grip comfortably in an intense wide leg stretch, then the Natural Fitness Cork Yoga Block is the answer.