The hole, shaped liked an infinity symbol, in the center is a brilliant idea. Not only does it make the block lighter than a regular foam or cork block, but the opening is actually ergonomically shaped, making it easier to hold on to. I felt more stable and in control when using this purple brick, which meant I could hold poses longer and go deeper into my practice. I also noticed that sometimes when I place my palm flat on a regular block, and put pressure down, I feel pain in my wrist. Gripping this block completely alleviated that discomfort and was very comfortable to use. If you love working with props while doing yoga, you'll definitely want to try this innovatively designed block. I bet it will change the way you practice.