Taking inspiration from the demanding requirements of the 103 kilometer Ultra Trail du Mont Blanc, the Gregory Packs Women's Pace 8 Hydration Backpack keeps you pleasantly hydrated while handily carrying all your gear, extra layers, and running nutrition. Its women specific design maximizes comfort during grueling distance efforts, with its Wraptor load stabilizer to limit bouncing during fast paced runs across jarring terrain. Mesh lined shoulder straps provide a great fit without soaking you in excess perspiration as you sweat. The included 2 liter hydration reservoir offers plenty of capacity for long runs. Inside the main compartment, the pack's internal cargo compression cinches down gear to reduce overall bulk. An easy access zippered pocket along the frontside makes quick work of grabbing and stashing items on the move. Dual stretch mesh pockets along the sides clutch onto energy bars, running nutrition, and spare water bottles during longer jaunts. Additionally, a nifty carry system allows you to collapse and carry your trekking poles when they're no longer needed.