Six Moon Design's Polycro footprint is made from ultra strong and ultra light Polycro membrane. Designed for shrink wrap and frequently used as a second thermal layer for windows, this material is exceedingly rugged. While not as durable as Tyvek, it'll provide significant protection and weighs virtually nothing.
Be careful though, this material is so light, it'll blow away in a light breeze. So be sure to weight it down after you spread it out.
This Footprint comes two per pack. So you've got twice the protection
Dimensions: 96" X 40" - 244cm x 102cm
Thickness: .75 mil - 0.19mm
Lunar Solo, Skyscape Trekker, Skyscape Scout, Deschutes, Deschutes Plus, Dechutes Zero-G, Gatewood Cape, Serenity NetTent
I just used the Polycro footprint on the AT and it held up well to the rocky surface. It is very lightweight and packs up small.
Many other sites sell this, but the shipping time can be exhausting. I got my Deschutes, Serenity, and this footprint just 72 hours after I hit the "Submit Order" button.