The Dyna 15 is built for big days where your pack is the only aid station you'll find. For runners more interested in routes than races. With women's specific fit for bounce-free stability and comfort, and plenty of room for all-day or even multi-day kits, whether you sip bottles or use a reservoir, the Dyna 15 will keep you company and see you through the longest of days. Convenient features like trekking pole storage, included hydration, soft flask compatibility (or use both for long, waterscarce routes) and bounce-free carry it is the pack for aspiring ultrarunners and adventurers everywhere. Vertical zippered harness slash pocket with whistle zipper pull Dual accessible lower side panel stretch mesh pockets Dual extralarge stretch mesh flask/phone/food harness pockets Dual lower stretch mesh food/supplement harness pockets Dual-zippered accessible lower side panel stretch mesh pockets Lower compression straps Front panel zippered slash pocket