Randy and Travis Machinery Weight Gym Training Sport Weighted Exercise Vest 40 lbs is a smart and effective addition to most any physical activity or exercise routine or even everyday activities. By wearing a weighted vest as part of your physical activity, you make your body work harder and you activate more of your muscles than you otherwise would. Thus, you burn more calories and you have an even quicker way to get toned and get the results you're looking for. This vest is one size fits and it has evenly-distributed pockets to accommodate each of the weight packs. The vest itself is made from a tough nylon fabric that's light and which doesn't restrict movement. It's also easy to clean and maintain. A padded lining makes this vest comfortable to wear for even long periods and adjustable Velcro straps give you a perfect contoured fit. Other smart features include reflective material for increased visibility at night and anchor points on the shoulders to attach other training equipment.