Hike with CamelBak's Highwire 20 in the fall, use it for ski adventures in the winter and spring, and carry your climbing gear in the summer. No matter your sport, this pack has the cargo capacity you need for full-on, daylong epics. It weighs less than 2 pounds and is made from lightweight ripstop fabric with a water-resistant coating. And thanks to its 100-ounce reservoir, it's versatile enough for day hikes, bike rides and even jaunts through the city. The pack's two compression straps offer incredible stability and its ventilated back panel keeps you cool and dry. Plus, the Independent suspension harness takes the weight off your shoulders so you can play outside comfortably until the sun goes down.