... 40lbs is a lot heavier than expected. Its distributed well and weighs down on your traps like a frameless backpack but that's no big deal. I use it for push ups (with bars and stairs), pull ups, and dips. I wear a tshirt underneath and its comfortable and cool enough. Stairs are good but running on a treadmill can bounce the vest a little and I don't feel like wearing a sweatshirt. My treadmill at max incline at 3 mph for 20 minutes puts a good burn on the calves. It was easy to put the sandbags in and all the straps adjust easily and stay put. As long as this vest continues to hold up, I'm very happy. Really mixes things up. ...
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