designed for walking, hiking and conditioning exercise * lets you stay in tune, with two front accessible chest pockets designed to hold an i-pod, MP3 player, keys and/or a cell phone in addition to weights * easy to clean. Hose it off, hand wash or machine wash with the weights removed * supplied at 15.5 pounds with a single layer of Flex-metalTM weights, but can be adjusted from about 1.5 pounds up to 30 pounds be adding additional ½ pound Flex-metalTM weights * Zipper front