You can finally add steady resistance to your daily cardio circuits without ever changing your natural running motion.
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Versatile Storage Pockets let you safely stash phones and energy gels in front mesh, shoulder slots, and a large rear pouch.
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Dynamic Chest System helps you dial in custom tension with side buckles that hold the vest fast as you climb stairs.
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Muscle-Sparing Padding rests thick Lycra layers exactly where you carry strain while moisture-wicking fabric chases heat off your shoulders.
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Centered Iron Sand Filling channels dense weights straight down your spine for fluid steps, and reflective strips keep you seen outdoors.
