Check the listing for details. Outdoor Research Backpack Adrenaline Day Pack Blue NWT. Color: Blue, Condition: New with tags. Listed at 60.00 USD. NWT Outdoor Research Adrenaline Day Pack in blue. The Adrenaline Day Pack 30L features a streamlined design, waterproof material, and thoughtfully positioned seams to deliver a versatile, lightweight day-tripper for fast and light mountain adventures. Two exterior water bottle slots provide quick access to hydration, and secure valuables in a zippered padded top pocket. Ergonomic shoulder straps and back panels sit just right on your torso, while a padded hip belt carries the brunt of the load, easing the strain on your shoulders. Dual daisy chains boost carrying capacity and offer easy access for quick grabs. A ripstop nylon shell with polyurethane coating makes this water-resistant pack a protective bubble against the rain.