San Francisco-based Peak Design — maker of one of our all-time favorite backpacks — is back with its first new bag lineup in five years. PD says its new Outdoor line of backpacks and slings can be worn together for use beyond the pavement. They feature the company’s “most advanced soft-goods design to date,” with lots of adjustment points for a variety of body types and loads. The new bags are compatible with the company’s modular packing cubes that make it easy to organize…