Getting outside for a day hike doesn't mean you need to pack for the weekend—the Osprey Hikelite Backpack provides just enough room for vitals without breaking your back. A ventilated AirSpeed back panel keeps air flowing between the pack and yourself, so there's no sweaty feeling at the end of the day, and Biostretch harness straps ensure the bag rests comfortably on your shoulders. With 18-26 liters of space you've got room for your rain shell, a warm layer, and lunch, and a hydration-compatible pouch can hold a three liter reservoir. Should clouds show up and you find yourself pulling out that raincoat, the Hikelitecomes with its own incorporated rain cover, keeping your layers and lunch nice and dry. The waist webbing can be removed if you're traveling on a plane and need it out of the way, and the sternum strap includes a whistle for alerting your hiking buddies if you get lost.