I purchased this ball for 2 reasons, 1. I am about 6ft tall and it does go by height, when you use one in a gym they don't often have one sized for tall people. 2. If has a 600 lb limit...not that I am 600 lbs, but I am heavier and I wanted to know I had a sturdy ball, beyond my weight. It was easier to pump up than I thought, there were no instructions per se, but it's not rocket science. I noticed afterward there was an instruction on the plastic covering the pump on which end to place the tubing. The pumping just takes a little time, and I am so glad they give you the tape to measure the circumference, or I would never have blown it up enough. You think it looks done and you still have a ways to go. I was still shy about 5 or 6 inches, but it seemed good. I like that they give you a little tool to lift the pin out of the ball to start pumping, and they give you an extra pin in case you lose it. The DVD is one of those mini ones, I haven't looked at it yet. Overall I am happy with my purchase.