Enhance your long-distance running experience with the Nathan Women's Pinnacle Pro 12L Hydration Vest. Made for women's comfort, this lightweight, quick-drying 3D air mesh vest is designed to keep you cool and comfortable while packing all your essential running gear. The adjustable sternum slider cords and Quick-Fit system allow for a custom fit on the go, providing maximum comfort during every mile. Tiered power mesh pockets securely hold up to 20 oz flasks with elastic cords, while a 1.6L insulated hourglass bladder provides additional hydration when your race heats up. With multiple storage compartments holding up to 12L and four keepers for pole storage, this running hydration vest is built for endurance and performance.