Ultimate Direction designed its Ultra Vesta Running Hydration Vest specifically for women so you can run, trail run, hike, ice climb, or train comfortably with all the water you need. Two front collapsible pouches secure the included 10-ounce water bottles for immediate access while you're running, and the horizontal pocket at the back stores reservoirs (not included) as big as two liters when you need more water for longer runs in the heat. The BPA-free bottles feature a leakproof cap for your convenience. Ultimate Direction made the vest's back panel out of Cool Wick Air mesh to keep your back sweat-free, the shoulder straps out of Power Stretch mesh for stretchy breathability, and the back out of ripstop for durability. The Ultra Vesta features two sternum straps, side adjustment straps, and both external and internal bungee straps to give you a snug fit that won't bounce around while you're running. Two large front storage pockets stow away your camera, phone, lip balm and wallet, and two zippered vertical pockets can store an extra layer or two. There are also loops for ice axes and trekking poles, when you trade in your running shoes for boots.