Trail and Ultra runners who demand top performance from minimal gear look to the Nano™ Vest for training and elite level racing. Designed for runners who prioritize weight and stability above all else, the Nano™ vest offers a premium minimalist hydration solution with two best-in-class 500 ml soft flasks and a pack-only weight of less than 150-grams. For comfort, the 3D vent mesh encourages air flow, cushioning and breathability while size options ensure a personalized fit. For convenience, streamlined gear organization includes a secure phone pocket, stretch overflow pocket for layers and trekking pole carry.