My boyfriend and I are active yogis, and attend class at every opportunity. I'm pretty flexible, and don't typically use blocks, but he... well, he uses them with some frequency. The foam blocks (typically from Gaiam) are inexpensive and so are propagated by yoga studios, however, they give very poor support, and don't feel at all secure to put your weight on. And the older and better-used they get, the more they give under you. So, I invested in these cork blocks as his valentine's day gift, and voila! Now we fight over who gets to use them! They're sturdy and solid, without being too heavy, and buying them through Amazon, the price was right; they cost a lot more on the Hugger Mugger website and other places. I highly recommend! 5 stars

this block is nice and sturdy, but not too heavy. much better than the foam blocks i have used. 5 stars

I am very happy with my cork block. It is a nice size and is heavy enough that it doesn't tip as easily when I use it to steady a pose. 5 stars

Have used for a month - really helped my form and stretch. I have large hands so comfortable with the size and weight. 5 stars

These blocks are great for yoga. The cork is my favorite material - firm and solid like wood, but without hard edges and not slippery on a wood floor, like the best attributes of a foam block. The only drawback is that they are heavy; foam blocks are better if you're traveling with them and need to carry your bags. 5 stars