The THE CAVE Groundsheet provides optimum protection for the tent floor. With the groundsheet specially developed for THE CAVE, you are on the safe side when you venture into rougher terrain - the perfect protection from sharp stones, branches or thorns. It also serves as the ideal underlay when you pack your tent back into the pack sack. The Footprint provides another layer of insulation to trap the warmer air and prevent heat loss. The shape of the additional Footprint fits the outline of "The Cave" and also covers the floor of the vestibules. Specifications: Size: Fits perfectly for "The Cave Weight: 0.4 kg Material: Abrasion-resistant 70D nylon taffeta with PU coating Water column: 5,000 mm Protection from sharp stones, branches or thorns