The Mountain Hardwear Corners 3 Footprint PL is a grommeted sheet that serves as protection for your tent's floor, protecting the floor from damage and wear. But the Corners 3 Footprint PL allows you to create a functional shelter by using just the fly and the tent poles of the Corners 3, with the Footprint. The resulting structure keeps off the rain, provides a fabric floor, and has tremendous ventilation at a fraction of the weight of the complete tent. The Pitch Light option of the Mountain Hardwear Corners 3 Footprint PL is especially useful for fast-and-light, mild-weather trips.