This is no ordinary foam yoga block. This Eco Foam Block is made of high-density EVA foam, of which over 50% is recycled from post-industrial & post-consumer foam. Not only is this block more eco-friendly, it is also a lot sturdier than your average foam yoga block. Giving you outstanding stability, grip and excellent comfort. With rounded edges and corners that provide even more comfort during use, and on top of that it's super light!