The kettlebell is a multi-purpose piece of equipment that can help you get a total-body workout in without buying an entire home gym. Kettlebells are perfect for explosive exercises, burning fat and building power, so it's no surprise that they're becoming more popular. 

While regular old kettlebells will definitely get the job done, we've found a few options from Onnit that look just as badass as the workouts you'll be doing with them.