In this unbeatable price you will of course immediately curious. Before gone, I'm not convinced of the vest. The build quality is solid, but the design is more reminiscent of a fishing vest. In addition, the vest for lot thicker people seem to be gdacht than me. The Velcro closure at the waist belt can probably be put to good use by persons with significant obesity. The vest slips when moving back and forth. The one can easily remedied with a belt across his chest. Here, the designers could also have come on it themselves. Despite this modification, the vest is however still unfit to work because the vest still mitwippt while running. After two training sessions run with the vest (about 6km each) I have regular backache. For training exercises with weight (pushups / pull-ups / etc) the vest is but quite usable. Conclusion: For toning passable - according eingener modification, especially for this price. For running but you should definitely look elsewhere to.