I bought this Pogo stick because I loved pogoing when I was growing up. I'm now 6'3 220lbs. The Pogo is rate up to 220lbs, and that seems to be pretty accurate. I can jump on this thing without bottoming out, but not very high (~10-12"). If I jump any higher it bottoms out pretty easily. On the other hand, it does serve it's purpose and seems to be well built. I don't think I'll break it and it's a fun toy to bounce around on. The knee problem is there, but it's pretty minor. I didn't have bruised knees, but you can feel the pogo rubbing up against your knees as you jump. Good product.