Whether you're heading down to the gym for a bouldering session or out at the crag you'll need a solid backpack. Even with a gear closet brimming with backpacks, we can't seem to ever get enough. There's one for bike commuting, one for weekend getaways, one for serious backpacking and one for day hikes, and so on and so forth. For those without the space, funds, or general interest in amassing a backpack collection you'd be embarrassed to tell any non-outdoors nerd about, finding the right medium-sized pack equally fit for around town travel and hitting the trail is the holy grail. To help in that search, we've selected the following three as standouts well worth your time, and money - see our collection at The Field