The Big Agnes Copper Spur HV UL Series Footprint offers greater protection from abrasive surfaces and damp ground. This protective footprint gives you the ability to fast-pitch your Copper Spur HV UL tent without the main tent body for a lighter, streamlined set-up in the backcountry. It's compatible with the both the Copper Spur HV UL Tent and Copper Spur HV UL mtnGLO tent. Please note, the footprint is a bit smaller than the tent floor to prevent the pooling of water during rainy weather.