Simple, streamlined and above all, able to stabilize your load for an efficient, comfy carry, the Sierra Designs Discovery 30 Backpack is the perfect medium-sized pack for mountain enthusiasts. This 30-liter pack will carry a long day hike's worth of gear to the summit or haul your fast-and-light overnight gear out to a scenic, remote lake. Its top-loading design is enhanced with deep side water bottle pockets, a top lid pocket, a front Super-Size-Me pocket and snack-ready hip belt pockets. The lightweight, air-flow-friendly suspension system has a single center stay to help support heavier loads with a pronounced lumbar pad that really helps transfer the weight to your hips. Small in size but big on features, the Sierra Designs Discovery 30 Pack is a well-ventilated daypack you can take on quick overnights when you need to recharge.