This stuff is very light and fluffy, containing not soil, but coco as it's base ingredient. It's labeled as a "soiless organic-based planting media". The perlite ratio is almost 50/50 with big chunks throughout the entire mixture. I even used a little to start some seedlings and it worked great.
It's ingredients consist of coco coir fiber, perlite, worm castings, compost, seaweed extract, seaweed meal, and leonardite ore. Your plants will appreciate this stuff a lot more than your wallet, but sometimes you gotta pay the price for premium stuff. And you can tell, a lot of love went into the making of this product.