Versatile and robust - the Ultra-Sil Nano Tarp Poncho from Sea to Summit. This poncho serves as both a rain jacket and a backpack cover, and it can also be used as a rain shield over your sleeping bag at night. The 15D Ultra-Sil material is extremely lightweight yet surprisingly durable. The silicone-coated fabric is waterproof, and the seams are taped to prevent moisture from seeping in at this vulnerable point. The corners of the poncho feature special attachment points for guy lines, allowing it to be used as a tarp as well. The design of the poncho accommodates larger backpacks comfortably underneath, ensuring that your gear is well protected from all kinds of weather.