Lightweight, waterproof groundsheet to fit Slingfin Portal 1 model tents The Portal 1 Flat Footprint from Slingfin protects your tent floor, increases weather resistance, and prolongs the life of your tent. Its made of the same mould-resistant PE-coated 20D ripstop nylon as the Portals floor. The included Cross Pole Pocket allows you to set up the Portal in fly-only mode for a super-light weather shelter for fast-moving outdoor adventures. Each Slingfin ground cloth tailored to fit the corresponding tent model, saving you from carrying any excess material.A great item to have when venturing into the unknown.