The Sierra Designs Lightning XT3 Tent Footprint extends the life of your tent floor by protecting it from rough and abrasive surfaces. Sierra Designs footprints are made from tough, 70D Nylon to protect your tent's floor. The custom shape fits within the outline of the tent floor. Fast Pack Footprints add function, durability, and versatility. Footprints protect your customers' investments 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 rain fly 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.