Ultimate Direction Fastpack 20 Backpack The lightweight Fastpack 20 allows you to move fast in the backcountry with a durable design that checks all the feature boxes. It uniquely fits like a vest with water bottles up front, but distributes weight like a pack. Perfect for storing your essentials for those ultra-running adventures and keeping everything comfortable, the Ultimate Direction Fastpack Backpack utilises Infiknit and fastflow technology. The back panel combines Infiknit seamless harness technology with Fastflow breathability for a comfortable, anti-chafe harness. A unique side zip allows easy access to the main compartment for total access to gear such as water, phone, maps, glasses or food while the roll-top closure expands or compresses to secure varying capacities. Large external stretch mesh pockets allow for quick access to the items you may need in a hurry and sliding rail sternum straps allow for a close, more secure fit. Trekking pole attachments secur