I agree with mixing it up with weights. Funny though, I didn't buy the vest. I wear a backpack and stuff it with weights and pyramid. The funny part is I don't skimp on spending money for things that I will use, but this isn't one? I did 43 pull ups the week of my 43rd b day and video taped it. It was a bet at work. Can't say they all looked pretty but my chin went above the bar for sure .