Features 3.0L Big Zip SL reservoir Weatherproof construction (Taped seams, waterproof-coated fabrics and water resistant zippers) Easy-access panel load Ventilated/padded suspension Removable frame sheet Description Product Description If you can do it in a day, the panel-loading Sprinter XT 25 can likely handle it-from some simple layers and snacks, to high alpine excursions. We've kept the focus on simplicity, yet still deliver key features like ice axe, trekking pole and helmet carry options, plus the weatherproof construction and effortless access to hydration that will keep you moving down the trail.