Fits Trail 21+ and 21+ Triple Tough tent in 2P 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 2P tent floor with quick connect buckles. Ripstop nylon. (Fly, poles not included). Weight 7 oz / 225 g