Nathan Women's Pinnacle 12 Hydration Running Vest

The lightweight, highly-breathable Nathan Women's Pinnacle 12 hydration vest offers a chafe-free, apparel-like fit for female ultra runners. It includes a 1.6L insulated hydration reservoir and incorporates the easy-to-access storage features necessary for long days on the trail.

Moisture-wicking, stretch fabrics hug your body to ensure a movement-mirroring fit and a bounce-free carry. The backpanel is tapered to help create a venting chimney. Dual sliding sternum straps let you dial in fit without getting in the way or causing undue pressure.

An included BPA-free 1.6L hydration bladder has an hourglass shape that keeps bouncing and "sloshing" to a minimum and utilizes insulating materials to keep water cooler longer. It has an easy-fill opening and a quick-release drinking hose that makes the system a cinch to refill and clean. The high-flow bite valve ensures leak-proof performance and a high flow rate.

The pack's large rear main compartment includes a dedicated internal pocket for the secure carry of the bladder and has a diagonal zipper that offers easy access to the large interior. Rear kangaroo pockets safely stow foldable trekking poles and other items that you may want to quickly put hands on. Up front harness pockets keep all kinds of essentials in easy reach. Two of those pockets are water-resistant, making them ideal for a phone or a headlamp. A small pill pocket is a perfect stash spot for electrolytes and it also houses a safety whistle which has become a requirement at some sanctioned races.

The Women's Pinnacle 12 running vest is available in your choice of size options which are based on your chest measurement (measured under the bust at the sternum) and your bust size. The Xsmall best fits 31"-32.5" chest sizes and a 34" bust, the Small best fits 33"-34.5" chests and a 36" bust, the Medium best fits 35"-36.5" chests and a 38" bust, and the Large best fits 37"-38.5" chests and a 40" bust.