Meet the Rogue Dog Sled 1.2: a power sled with a bunch of awesome attachments, allowing you to perform strength training and cardio workouts anywhere. It can accommodate both high and low push stances. With Bridge, High Bar, Low Bar, Wheelbarrow, and Lawn Boy attachments, you can put this device to good use.
You can also get a wrap around rail to change directions quickly. The Rogue Dog Sled is ideal for crossfit preparation.