Fast Pack Footprints add function, durability, and versatility to any of Sierra Designs tents. Footprints protect your tent from dirt, gravel and sharp objects. If mild weather or a particular trip demands a fast-and-light approach, then try "Fast Pack Mode" using just the Fast Pack Footprint with the rainfly and poles to make an ultralight shelter. On average, it accounts for a weight savings of 30%, making it another tool in your fast packing arsenal.