DESCRIPTION Add-on or aid replacement for vest-pack harness pockets or a handheld accomodates the 250ml flask. KEY ATTRIBUTES BUILT FOR SPEED Vest-pack fit provides bounce-free stability and purpose-built for incredible comfort so you can focus on FKT's and PR's. HYDRATION INCLUDED Bottles, reservoirs and add-on flexibility for short runs, long runs and everything in between. You decide what you need. Duro/Dyna makes it possible. EASY GEAR ACCESS Pockets up front for quick access to fuel and soft-flasks, trekking pole storage when you need to use your hands as much as your feet to move forward, and room for rain gear and extra layers. CARRY INFORMATION FULL AIRMESH HIPBELT (15L ONLY) Mesh covered, die-cut slotted foam harness Slotted adjustable sternum strap with safety whistle Stretch woven harness pocket (s) FULL AIRMESH BACKPANEL Breathable mesh wrap with soft, irritation-free contact surface BODY WRAP HARNESS Adjustable and removable dual chest straps for additional stability Front harness gear- and food-organization pockets Breathable mesh wrap with soft, irritation-free contact surface Die-cut eva foam for larger loads (15L only)