Find gym equipment and accessories at Target.com! The dragonfly 4" cork & recycled eva foam yoga block was designed by dragonfly s team of yogis looking to create an eco friendly block that is also lightweight. The dense foam combined with sturdy cork made from tree bark yields the most stable yoga block on the market today. Perfect for heavier yogis or those that need a little help with balance through stability. The cork and recycled foam block will endure years of the most rigorous yoga routines. The smooth, hard surface is highly resistant to wear and tear. Plus, this block has rounded edges - making it easy to grip and move on the fly.