Description of Bibler Tent I-Tent/Firstlight Ground Cloth To provide protection and water resistance in conjunction with their tent series, Bibler offers their I-Tent/Firstlight Ground Sheet as an option with the I-Tent or Firstlight tent. A durable and strong ground shelter for your tent, the Bibler Ground Sheet is made from coated 70 denier nylon taffeta to minimize wear and tear on your tent. Reinforced grommets along the sides allow you to easily use the ground cloth as a tarp. Handmade with the same painstaking attention to detail as their line of tents, it's an accessory almost a necessity.