The design of the Symbium3 backpack gives hikers access to such vital supplies as water, food, camera, map or raingear without requiring them to take the pack off. A generous stand-alone compartment can sit atop the pack or be worn on the chest where a protein bar is not far away. Comfort was a priority in the design as well. The pack offers many adjustment features to optimize weight distribution, and the contact points are meticulously positioned for maximum freedom of movement. In addition to a large zipper that extends the length of the main compartment, a smaller zipper along the bottom mean