CamelBak: The Women’s Ultra Pro Vest is perfect for long distance training and racing. It's engineered to fit a woman's frame and available in four sizes to ensure a personalized fit. There are four different soft flask specific pockets so you can customize where you carry the included two 500ml Quick Stow flasks. Made with 3D micro-mesh, the Ultra Pro ensures proper ventilation and comfort over the long-haul. It offers plenty of front cargo storage for easy access to fuel and a secure zippered pocket for your phone. The back and sides include several stretch overflow pockets for extra layers or essentials and it can accommodate a 1.5L reservoir for longer self-supported runs. With reflective accents throughout, you’ll always be visible on early morning or late-night expeditions.FEATURESWomen's Specific Fit: Engineered to fit a woman's frame3D Micro Mesh: Multi-directional air flow and cushioning to maximize comfort and breathabilitySecure Phone Pocket: Conveniently located with a zipper closure for secured quick accessDual Adjustable Sternum Straps: Offer a range of adjustments for a custom fit and increased stabilityStretch Overflow Pocket: Quickly stash or shed a layer or rain shellFuel and Gear Storage: Organize run essentials with pockets specifically designed for Quick Stow flasksTrekking Pole Carry: Easily remove or replace poles while runningReflectivity: For early morning or late-night runsSafety whistle: Extra assurance in case of an emergency SPECIFICATIONSCOLLECTION: RunningACTIVITY: RunUSER: Women'sHYDRATION CAPACITY: 1L/34 ozHYDRATION TYPE: Quick Stow™ Flask (x2)BPA/BPS/BPF FREE: YesGEAR CAPACITY: 6L/360 cu inPACK WEIGHT: 150g/5 ozDIMENSIONS: 36 x 24 x 11 cm / 14.2 x 9.4 x 4.3 inFITS TORSO: Fits a chest size of: XS 66-81 cm/26-32 in. S 71-86 cm/28-34 in M 81-93 cm/32-37 in L 89-101 cm/35-40 inACCESSORIES INCLUDED: 2 Quick Stow flasksNUMBER OF EXTERIOR POCKETS: 10