Fits Night Sky tent in 4P mode and sized slightly smaller than the tent floor to prevent water pooling. Helps extend tent floor life by reducing the normal wear and tear from wet and/or abrasive sharp ground. Also, designed to be used independently in fly-footprint mode with stakes and poles. Color coded to 4P tent floor with quick connect buckles. Polyester. (Fly, poles not included). Weight 13.7 oz / 388 g