Keep your essentials handy without being weighed down during your run with the Osprey Duro LT hydration vest pack. Breathable mesh, a bounce-free minimalist design, and two included soft flasks make this lightweight vest pack ideal for racing or shorter runs that don't require much in the way of fuel or fluids. Featuring comfortable, breathable mesh, the pack's harness is designed to mirror the contours of your body, offering a fit that feels more natural than that of many traditional backpacks. Dual chest strap buckles stabilize fit and offer multiple placement options and adjustability. A unique tabbed design allows you to disconnect the straps from either side of the harness or remove them entirely. The streamlined shape of the backpanel maximizes ventilation and the 3D mesh construction offers a soft, irritation-free contact surface where it does touch your back. 

• The two Hydraulics 360mL Soft Flasks each hold about 12 ounces of fluid and are BPA-free for safety and your peace of mind. Leakproof bite valve caps ensure your hydration stays contained but easy to drink when you need it.
• Backpanel with 3D Spacermesh body wrap for lightweight padding, full ventilation and soft irritation-free contact surface
• Minimalist body contact for minimalist fit/maximum ventilation
• Harness with Airmesh body wrap for maximum ventilation, stability control and soft irritation-free contact surface
• Two extra-large stretch mesh soft flask/food harness pockets
• Two Hydraulics 360 mL Soft Flasks included
• Two lower stretch mesh food/supplement harness pockets
• Vertical zippered harness slash pocket for valuables or phone
• Snap-in adjustable/removable dual chest straps for customized stability
• Tuckaway safety whistle
• Large dual-entry stretch mesh rear pocket
• The Small size best fits chests measuring 29.5"-35", the Medium best fits from 35"-41", and the Large best fits from 41"-47".