Running Vest Hydration Backpack for Men Women, 5L Lightweight Running Backpack Hydration Pack for Marathon, Trail, Cycling, Hiking, Jogging The Running Vest is the ultimate companion for runners, hikers, and outdoor enthusiasts who demand performance without the extra weight. Weighing just 4 ounces / 160 grams, this ultra-lightweight hydration backpack is 5L (15 x 7.5 inches) , making it barely noticeable on your back during intense workouts. The ergonomic, contoured design features adjustable chest and dual waist straps that secure the vest to your body, minimizing bounce and shake so you can focus on your stride. The breathable stretch mesh back panel and quick-drying ventilated construction keep you cool, while soft edging prevents chafing during long runs. Smart storage includes a waterproof phone pocket, dual rear zippered compartments, shoulder pockets for 250ml bottles, and extra space for snacks and gear. Compatible with a 1.5L water bladder and two included soft water bottles, this vest is perfectly designed for men and women tackling trails, road runs, or gym sessions. NOTE: The package does not include water bottles. Please purchase water bottles and water bags separately. About this item PERFECT FIT: Running backpack for men woemn has adjustable dual chest straps contour to your body type, minimizing bounce and shaking for a secure, stable fit during runs. SUPER COMFORTABLE: Hiking bag designed with breathable stretch mesh back panel keeps you cool, while soft shoulder straps with smooth edging prevent chafing during intense workouts. ULTRA LIGHTWEIGHT: This running bag is made from premium nylon, this running vest weighs only 160g (0.35 lb) and measures 15(H) x 7.5(L) x 2.8(W) inches with a 5-liter main compartment. SMART STORAGE LAYOUT: This water pack bac